TI89: How to Integrate Using Your Calculator

[taekwonwelchify]

oh my god, you are freakin awesome!! thank you!!!

[kiwi7676]

Hi your videos are very helpful! Can u help me integrate this please?? I dont understand why it either keeps saying too few arguments or syntax :( thanks in advance!!

(sin(5x))^3*(cos(5x))^5

[kiwi7676]

hi why are u integrating with the 3 instead of the 4 for the intervals??

[TheSantiagok810]

when i integrate the same thing as you, my calc shows me "' non algebraical variable'', what can i do to fix it?

[Cj90RAK]

thanks it was helpfull thanks again for sharing



[fz2176]

Hi. Whenever I integrate a function, such as x^2 for example, and I don't specify the limits, I get an answer of 0 instead of the expected x^3/3. I have the same issue with differentiation. When I specify my limits I do get the right answer, however. Not sure why I keep getting 0 when I should be getting a function. Please help.

[andreasahlqvist91]

Thanks for this perfect video. It saved my day :)

[julian12lopez]

can the ti-89 solve convergence or divergence? and how if it can?

[slowassgsr]

WOOOOOOOOOOOOW.... my volume is turned all the way up I still cant hear shit.

[Msrrivers]

when i do it 3 answers keep coming up how can i change that

[ModelOrange]

I love calculus because I love drawing the integral symbols.

[vikdebeast99]

when i did this same equation it said error?

[shylildude]

is this app/program available for ti 83 calculators? what if you want to find an improper integral is there an infinity button?

[Nawledge1]

I'm trying to integrate 3x+6 over the sqrt of 2x^2+8x+3

I follow all the steps, but it says I have too many arguments. When I take out the comma and x, it says I have too few arguments. Am I doing something wrong?

[iFr4ntiK]

Why, when you entered the functions both as 3X and x^2 and as y2 and y1 did you get a different answer for the area? Shouldn't it be the same since they both mean the same thing?

[dc33432]

very helpful, thank you!

[ovar9k]

Can the TI-89 do multivariable calculus? If so, how would you go about doing double and triple integrals? What about vector-valued functions? Also, is it possible to convert a function to polar coordinates?

[doug6319]

how would you integrate the abs of an equation? such as x+IxI

[tkim2008]

For some reason mine won't do indefinite integrals. When I do what you did in 1:58, it keeps saying "Error: non-algebraic variable in expression"

[tkim2008]

@tkim2008 nvm my calculator was messed up, I cleared the RAM memory and it works now.

[zen811547]

which calculator is better?

ti 89 or ti nspire

but the ti 89 is expensive than ti nsipire

2

[zen811547]

which calculator is better?

ti 89 or ti nspire

but the ti 89 is expensive than ti nsipire

[TheNeoSwoosh]

isit just me or is the sound numingly quiet?

[zuzikini12]

thanks alot

[kauths25]

when i integrate the same thing as you, instead of getting x^3/3 my calcukator gives me 333.333 even tho i have exactly what you have typed in

[mathmergency]

@kauths25 Press the 'Mode' key, then scroll down until you see an option called 'Exact/Approx' then press the right arrow and select 'Exact'. That should do it!

[joce138]

@mathmergency hey i have the same problem. i integrated x^2, but i got 2.6667 so I changed to "exact" but it just gave me 8/3

[lxw930720]

@joce138 i have the same problem!

[Tinnguyen123]

@kauths25 what i did is went to F6 and select : Clear a-z

[137bg]

Thank you so much. Excellent, clear explanation. Keep up the good work.

[dendeanda]

I'm trying to find area between y=x+6 and y=x^2 between x= -2 and x= 3. When i enter - 2 it says syntax error :o( Am I doing something wrong?

[mathmergency]

@dendeanda Where are you entering the -2? This is the syntax that you want to use:

Function you want to integrate , variable of integration, lower limit, upper limit

so it should look like this on your screen:

integral symbol(x+6-x^2,x,-2,3)

Let me know if you still need help.

[dendeanda]

@mathmergency I found out what I was doing wrong. I was using the "minus" button instead of the "negative" button. Thanks for the help, you're a life saver!

[vaspour92]

@dendeanda make sure u are using - (negative) sign instead of _ (minus) sign, that's the syntax i think u are getting given u follow the instructions

[mjcowley]

Very helpful. Thanks.

[morrizhon]

many thanks!

[MsVdw]

Thanks!!!