 Hello everyone and welcome to Tutor Terrific. In this video I'm going to do another calculator tutorial for you on the Texas Instruments TI-30XS multi-view calculator. Now this is a second generation multi-view calculator and it's based off of this one which I've reviewed already, very popular review, the TI-34 multi-view. It has the very basic setup just like the 34 does. It's a very similar operating system and style of layout to the 34 multi-view but it's just a little bit easier to work with and it's immensely popular for its really nice design. It is an equation operating system-based calculator like the other one that I just showed on the screen and that means that we plug in expressions into the calculator and then we press Enter. The multi-view feature has to do with what's called math print, a really really nice feature that allows you to see your expressions as you would in your textbook rather than on a standard calculator. This is how we turn the calculator on, on button, and you know it's on when you have a little LCD blinking at the top left corner. So let's do a basic calculation right now, just checking that order of operations works correctly. I like to do 7 times 8 minus 3 just to make sure it does the multiplication before this subtraction and we should get 53 for our answer and we do. This calculator puts it on the same row so that you have more room for more calculations underneath such as let's try negative 7 times 8 minus 3. Now how do I get a negative on this calculator? Well for most Texas instruments there's a little button down here that has the minus sign next to it and so I can do, watch what happens when I start typing. Negative 7 times 8 minus 3 you can see it populating the next row down. This answer should be quite different. Negative 59 it's still doing the multiplication before the subtraction. So order of operations is correct. Now let's say you wanted to clear your screen so that you wouldn't see a bunch of calculations all at the same time. You would press the clear button right here so it clears out the calculation. I want you to know that if you want to repopulate the screen with a calculation you previously did you don't have to type it in all again from your memory you can use what's called the memory feature by pressing second enter that can give you your previous calculation or by scrolling up which can give you your previous calculation. Let's say I wanted to edit this guy. Let's say I wanted it to be 2 times negative 6 divided by 4. Do I have to just start over? No. What I can do is press the up arrow twice press enter and it will allow me to edit the calculation that I did. So I wanted it to be 2 times negative 6 so I'm scrolling over with this little cursor here to the negative 6 and you see the delete button? I can either delete all these operations and press negative 6 times 4 or alternatively I can do the following. I can overwrite my calculation. Now for these calculators you have two signs next to each other before a number such as multiplication and then negative. You might want to put the negative in parentheses so I can start typing negative 6 and these are the parentheses buttons right here open parentheses and close parentheses like so and then divide by 4. So this is called the overwrite feature. Now if you didn't want to do that you could do another option again I'm gonna select it say I wanted to just insert those few extra keystrokes. I can press second insert now you see the 6 is blinking in and out with a little underscore sign underneath it that means if I the next button I press will insert that keystroke in front of the 6 check that out so now it says 2 times parentheses 6. I want a negative so I'm going to put another negative there and then watch as I scroll to the right it starts blinking with the black dot again that means it's going to go back to overwrite mode if I keep typing keystrokes. What I want to do is I want to insert again in this position a close parentheses and at any point I can press enter to evaluate or I can scroll to the end if I want to see the whole thing first and then I can press enter to evaluate. Of course I would get negative 3. This calculator can do on the same screen up to four calculations and so you can see your past four calculations on one screen. Now another neat feature this calculator has like all the multi-view calculators is the toggle feature right here which allows you to toggle between fraction view and decimal view. So I'm going to set up a calculation that gives you a proper fraction and first I want to make sure in the mode category I want to make sure I'm in classic mode not math print mode for this demonstration because I want to show you how annoying it can be to work in classic mode when you have a math print mode. To get out of menu we press second mode that is the quit feature. Now I want to explain for those of you don't know I've been using it a little bit the second feature right here allows you to access the functions on top of each button in there on this calculator in green there's lots of color combos for this calculator so if I press second and any button it will activate the feature directly above so when I press second mode it activates quit instead of mode. You know you've got the second button depressed when you see a little second symbol up there on the screen it's tiny. Also notice that I'm in degree mode which is another mode option at the top of the screen which means when I use sine cosine in tangent it will assume I'm in plugging in degrees for angles. Okay so I'm going to show you that toggle feature the decimal to fraction back and forth toggle. So I'm going to type in a very simple calculation that's going to give me a fraction seven minus four and then I'm going to shoot I want that all in the denominator so I have to I can press second delete to insert some parentheses so the calculator knows in classic mode that this is my entire numerator then I divide by something larger so eight plus six for example so it's going to give me naturally a decimal and it's not a nice decimal but it's a decimal nonetheless and by the way it just just points out that I want to show you that these numbers are defaulted to floating point style and so we see a large decimal and what floating point means is we have a bunch of digits and the decimal can be used and moved around in different spots so I can have a certain number of digits before and after as you can see there's up to 10 digits by default on this calculator that are used now if I want to see this answer instead as a fraction check this feature out press that toggle button and it gives me the fraction version down here 3 14th if I press toggle again it sends me back to decimal mode now I'm going to do a calculation like that previous one but I'm going to be in math print mode so I can show you the difference so again press the mode button scroll down on your mode button until you see classic highlighting and blinking and move the cursor over one until math print is blinking press enter to highlight it now we're gonna be in math print mode which is what most people default to when they have this calculator to get out of the mode when you we press second mode which is quit now I'm going to do that same calculation I have another option okay and that is n over D so watch this 7 minus 4 on top and then on bottom 8 plus 6 so this is what the math print feature does it allows me to see it like this and it will actually give me the answer as it would appear in a textbook in fraction mode first and I can of course toggle back and forth between that and the decimal look at how it's showing the fraction when I toggle back and forth not as a slice fraction but a normal top and bottom vertical oriented fraction I want to also show you square roots and how math print does those so I'm going to clear this out I'm going to go back to classic mode and I'm going to show you square roots so in classic mode to get to square root you press second x squared and it gives you a square root with a parentheses and now we'll put what we want to find the square root of inside 8 times 8 for example which is 64 square root of 64 is 8 so we should accept 8 okay so pretty basic now in math print mode which I'll go into now I want to show you the difference so if I press second squared look at the difference it has the square root radical symbol over my entire expression right now and I don't need parentheses because it follows me as I type numbers which is really really interesting I'll do the same calculation I press the arrow button here the right arrow to get out of the square root and I press enter you can see the same result so it's quite nice now just so you can see let's do the square root of some irrational of some number that doesn't have a perfect square root like six again press the you see it's we're still in the square root when it's blinking with the little arrow symbol but you press right we're outside of it and you can see it's going to default to just writing the square root of six so for example if I had some number in here that could be simplified it would do that simplification for me let me show you the square root of 8 but first let me toggle back and forth this gives me the irrational number for square root of 6 and I can toggle back to the radical version but now let's do one that can be simplified in math print mode press second square root 8 now you know you can pull out a 4 from that and get to root 2 let's see what happens when I press enter look at that it gives me the simplified version of square root of 8 and just so you know if you press enter open over again it will repeat the same calculation now I want to look at other exponent based buttons on this calculator so as I taught pointed out x squared here if I type a number and then press that button it will put a little exponent by it squared which is equal to 25 as you know 5 squared now if I go back and I press classic mode it's going to look a little different so 5 squared it's not really elevated is it it's still a superscript but it's not elevated above the number of course it's going to give you the same answer now let's look at higher order exponents how do I do higher order exponents on this calculator we use what's called the carrot button right here okay so let's try 5 to the 9th okay in classic mode this is what it would look like okay 5 to the 9th which is quite large let's switch back to math print mode like so now in math print mode if we're to do 5 to the 9 using the same buttons look what happens when I press the carrot it goes immediately to the superscript position for exponents that types a little 9 now I'm still in the exponent positions so if I type more numbers it will evaluate them for me now keep in mind that this calculator cannot find the exponent base raised to such an exponent as this we get overflow because there's too much calculation to do this calculator can work into the hundredth power but not much higher than that definitely not an order of magnitude higher now if you have an error like this or syntax errors means you type something wrong all you do is press clear and I'll take you back to the error which is for me the exponent so of course I'm going to delete all of those extras and before I type something else I'm going to make sure I press the right arrow to get out of the exponent position okay so we have our exponent so that's what it looks like in math print mode what if you wanted to do higher order radicals like the foot cube root or the fourth root going back to classic mode I want to show you what that looks like right now classic mode we press second carrot to get the higher order root but we need a number in front before we type that series of buttons when you don't type that series of buttons what it's going to assume is your previous answer that's what an s stands for previous answer to your previous calculation is the degree radical you want to use and of course that's not true for us that would be crazy I'd say I wanted to find the cube root of something I'd press 3 then press second carrot now it's going to evaluate the cube root so that little x means the previous number is my radical degree and let's do 27 notice how don't ask me why it does not put a parentheses for this type of radical higher-order radicals only for the square root so we need to be careful if you have multiple things multiplied together subtract you want to put them all in parentheses inside this now let's look at the math print mode in math print mode things look a little different when I use this series of buttons for a higher-order root ah look at that it makes the root degree in the spot you'd assume it would be in and now again I want cube root and so I'm going to scroll back to the left and I can adjust that to be a cube root now look at that that looks great that looks like what you're used to seeing so I'm doing the 27 inside there and I press right as usual to get out of the cube root now and I get three like before okay is one more thing I want to show you a scientific notation button here times 10 to the end so in math print mode which I'm in right now it looks really snazzy for example if I want to write out and calculate 5 times 10 to the 6 I press 5 and then press that button times 10 to the and look at that it populates that all the screen allows me to put the exponent that I want which in this case would be 6 and then I can switch to the standard notation which would be 5 million the toggle switch will not allow me to go back and forth between scientific notation and standard notation on this calculator now let's say you wanted to do something and you typed it in wrong so that it the calculator can't read it such as 5 times 6 minus 2 for example I did not open that parentheses I closed one that was never opened that's an example something the calculator can't do so it's going to give you a syntax error when you press clear it's going to go back to the very spot where the error was generated and of course that is right here and you can of course if you wanted that to be 5 times 6 we already know we could just put a times there calculator will do the proper order of operations next I want to show you how this calculator handles all things trig because it's different than the TI 34 multi-view from my previous video on that calculator in that calculator they had sort of imprisoned all of the trig functions in one button called trig and it was actually up here as a second to pi in this calculator they have to the joy of all those doing geometry classes or algebra classes in which trig is a little bit of a subject they've moved those out free them to be their own buttons now you need to make sure you are in the proper mode when using these buttons for your calculation if you are calculating sine cos under tangent of angles and radians you need to switch your mode because it defaults to as we see here d e g if you want to be in radian mode you very first at the top you see we're on that selection between degrees and radians and gradients we don't use gradients very much so if you want to be in radian mode we just toggle over and press enter until it was highlighted for now I want to stay in degree mode so if you want to calculate for example the sine of 58 degrees we press sine 58 make sure it says d e g up there at the top and press enter gives us the sine of 58 and we can do that similarly with cosine and tangent now I want to point out something there is no button for cosecant secant or cotangent functions because they are not used very much I'm guessing and they didn't want to make special buttons for them it's very easy actually to generate cosecant secant and cotangent cosecant for example is the reciprocal of sine so what we would do is we'd actually do we could do a fraction in math print mode one divided by the sine of 58 that is the cosecant of 58 and notice how I got out of the denominator by pressing the right arrow if I press the left arrow it'll let me go back in the denominator if I need to add or edit some things and if I want to go to the numerator and edit some things I press the up arrow quite nice feature okay and this will be the cosecant of 58 let's say we wanted to do an inverse trig function so we have a ratio of right triangle sides or something and I wanted to find the angle I would use an inverse trig function those are correctly placed the second options for each of those trig function buttons so inverse sine is found by doing second sine inverse cosine is found by doing second cosine and inverse tangent is found by doing second tan awesome so what I'm gonna do is I'm gonna do the inverse of the inverse sine of one this is gonna calculate a nice angle for me and so to do this I press second sine and then I put a one in there and then I press enter that gives me 90 90 degrees okay let's say instead I was in radiant mode I'm in degree mode so it gives me 90 degrees so switch to radiant mode now I'm gonna call the same calculation pressing second enter aha not only does it show me the calculation it completes the calculation and now I see it's in radiant mode if I press the toggle switch it gives me oh look at that pi over two those of you who have done a little trade with the unit circle you know that 90 degrees and pi over two are the same which is really neat so I could toggle back and forth between that transcendental number and pi over two I also wanted to point out for you that pi has its own special button on this calculator and it's right there pi and so I can of course find let's say the tangent of pi now that I'm in radiant mode tangent of pi no problem I can also put fractions in here with the n over d or without the n over d and just do slash for example tangent of pi over four and then of course we press right or twice to get out we know that equals one now if I was in the wrong mode I was in degree mode instead like I just switched to and I tried to do tangent pi over four it would not give me tangent of pi over four radians it would give me tangent of pi over four degrees and that's not what I'm anticipating is the correct answer so you've got to make sure you stay in the right mode or at least you know which mode you're in so that covers trig on this calculator the last thing I wanted to show you guys something I didn't show you in the previous video and that's a little bit of statistics this calculator can do some basic statistics and log bivariate data for example actually can it can do three column data what you would want to use this for maybe some stats you can't graph on this calculator but you can look at stats so for example I'm gonna I mean L1 which is basically column one of the data I'm just gonna put one for the first entry and then press enter to list the second entry I'm just gonna continue to place the natural numbers incrementing all the way to eight so that's my first list numbers one through eight if I want to switch to the second list for example like so let's say I am gonna increase by half starting with zero so zero enter point five enter one enter one point five enter see how it's matching them with one of the members of list one that's how this works gonna keep going here two two point five three three point five and then we've ended at eight now this calculator can do a couple things with this data some basic statistics if I press second data it allows me to look at one variable stats or two variable stats I'm gonna look at one variable stats and I'm going to take the data as L1 and frequency and it allows me to calculate a couple things all right allows me to it lets me look at for example the number of data points the mean of the data points the standard deviation of the data points really neat really neat the sum of all the data points the sum of the data point squared the min data point the quartile one of the data point the median of the data point look at all of that that's stuff that basic statisticians need to use in addition if we go back and clear that out we go back to the list and we press second state again we can do two variable statistics so I would choose one is my input and one is my output list so I'll choose x data as the list input and I'll choose L2 as the list output and press calculate and it's going to list a few more things the mean of both the standard deviation of both the sums squared both and some two variable statistics like the the coefficient of correlation so R is a correlation coefficient this has perfect correlation because it's a straight line so the correlation is one really interesting stuff here if you wanted to clear your data lists you could certainly do that by pressing if you're in the data itself pressing data again and if there's ever a menu like this you can either scroll to the menu item you want to activate or just press the number next to it so I just press number one which cleared list one if I press data again I can either scroll down and press enter or press the number two at any point and it clears that list as well so I get a fresh slate I want to get out of the data window I would press second quit all right guys that's been a short introduction to this calculator I hope you've enjoyed thanks for watching this is Falconator signing out