Arithmetic Sequences

[CarrieIsDaBomb]

but thanks for the video, it has helped :D

[CarrieIsDaBomb]

I have an exam on Rational Functions, Statistics and this lesson on Monday. Screwed...

[mpaxxxx]

@jallil2403 wtf??hahahhhahahha

[lgndarymeth]

Can u make a video on finding the 1st term & common difference given the 9th term of 8 and the 4th term as 20?

[mbrandl11]

@lgndarymeth

I'll add it to my "to do" list. No promises on how soon it'll be done though. Sorry! In the mean time, try searching YouTube or check out Khan Academy.

[AnimalOfAnime]

You just saved my ass. Big test on this tomorrow

[greenbeanbananas]

HA!! I got the answers right. thankyou :)

[mbrandl11]

@lfwpfr509

I use CamStudio to record the video and I use Paint.NET as my "whiteboard" for most of my videos.

For this video the "whiteboard" is a web tool at ImaginationCubed(dot)com

[mbrandl11]

@jallil2403

Someone has already written an explanation for that problem.  Put the problem in Google and check out the first result. :-)

[Atroll995]

OMG thank u so much!

[lordswit6666]

thanks for the help.. hope you post something about trigonometry.. im an engineering student.. so i need to master the basics.,. thanks for helping

[FRappable]

Anyone know the sum of Xeno's Paradox, I think it is 1, but not sure

[mbrandl11]

@FRappable

I haven't heard of Xeno's (Zeno's) Paradox before, but there's an interesting article on Wikipedia about it.

[BillaPacific]

Alot of examples given! 7 stars XD!

[BillaPacific]

@BillaPacific It's 7/5 XD

[dtm876]

what if i dont know "a" or "d"

the 5th term of a progression is 14

the 16th term is 26

[mbrandl11]

@dtm876

Then we can make two equations and solve the system of equations to get the first term and the common difference.

14 = a1 + (5 - 1)d <-- Fill in the 5th term being 14 for one equation

26 = a1 + (16 - 1)d <-- Fill in the 16th term being 26 for the second equation

Then you can use any method you'd like to solve the system of equations.

I'd suggest solving one of them for a1 and substituting that into the other one and go from there.

I hope that helps! :-)

[elainebagsic]

thanks for having this video . It helps me to understand my lesson in math... but the formula is different from the formula of my teacher?? I"m confused.... plz..

[mbrandl11]

What is your teacher's formula?

[sunshineolypops1394]

thanks soo much i thought i was going to have to drop out of provincials and go into an "easier math"

[ketevan1]

thanks u really helped me  :)

[Sherlotta]

THANK YOU!!! so much for making this video. my math teacher just handed us this packet and I was so confused! But your review at the beginning and then explaing the formula really helped me understand and u make it so easy!

Thank you again!!!! 5 stars!

[chespirito300]

This is the correct way that math should be explained. Most of the math teachers that I've had always jump ahead and skip steps that seem simple or common sense to them. This creates a problem for people like us that are trying to learn, since we fall behind trying to figure out what they did. You made me understand the concept by not skipping any steps, no matter how simple they are.

[mbrandl11]

Thank you for your kind words! I'm happy I can help! :-)

[generic98]

@chespirito300

I heard that workplace math classes teach like this, you might want to consider those classes.

[daved042008]

why cant everyone teach like this

[melissa18lol]

that was very helpful mann

[bearteeth8]

helped a lot thanks

rock on

[FFDissidia1]

My teacher doesn't even know how to explain this. You explain a lot more clearly than her. THX!

[tdog661]

u pronouce it weird but all in all ur amazing

!!!!!!!!!!!!!

[Jaimmelove]

Words can NOT explain how much you just helped me! My teacher completely confused me an hour today trying to teach me this and I just could not understand it. :( Thank you sooo much for posting/creating this video and explaining it as well as you did! I did not get confused once. Thank you-THANK YOU so much! :) 5 star rating! :)

[joannax87]

Wow, you explained that way better than my teacher did. Thanks!

[ImmanualKant1989]

that was great man !!

[alexv907]

nice thanks!

[WhizzyLewis]

big help, thanks a massive amount!

[htl2142]

dude u r a genius. thx !!

[lawie93]

thank you :) .. ur video is very helpul ... there's this question which im struggling with ... can u please help me ..

write down the next term for the following sequence:

2,6,18,54,162, ...

thanx in advance :)

[mbrandl11]

This would be a geometric sequence as we need to multiply by three to go from one term to the next.

So to get the next term we'd just multiply 162 by 3.

[lawie93]

ooh okay so it is that simple! ... thank you so much :)

[vixykill]

Yay! thank you so much!!! I was so lost in class today..lol Fabulous video!

[marci91189]

thank you it really helped

[11BELAL471]

if there is no common difference how could we ever find the 7th and 21th term pls. explain.Cool video it still helps but please teach me about how to find the term in the sequence if there is no common difference.

[mbrandl11]

If there is no common difference, then it wouldn't be an arthmetic sequence. That's part of the definition. :-)

You could potentially figure out various terms by following whatever the pattern is and working them out one by one.

[prangkelb]

d=4 and d= -2, that's the common difference.

[myrtilus]

great video thanks

[astromath13]

very very helpful....thanx a lot!!!!!

[ray1351]

lol now i know the first unit :) every other unit to go... xD

[everysixseconds]

now i understand. =D

[Dippazncream]

you explained that really well. thanks.