AS & A Level Maths No. 7. Sigma - from www.mathstutor.biz

[TheLoveformankind]

love U

[produccionesmiranejo]

Thank You, i think i'll pass my test now.

[euch27]

Oh wow, I never knew that one could make that small equation to figure out the number of terms!

[sexy658]

How to do a sigma notation for a quadratic equation?

[jkiddo223]

ack you are amazingly good at teaching in laymen terms, assuming not everyone remembers what the variables mean. keep it up, we need more people like you!:) and what a great accent btw

[SuperStef92]

Your stuff of ledgend please don't randomly take these videos off or else im going to fail reaaaal bad....Wish me luck for my test and Mathstutor keep it up man you've saved my ass... my teacher won't teach me this agen even tho i dont understand but u have. Thanks xxxx

[mathstutorbiz]

good luck in your test.

mathstutor

[SuperStef92]

Actually i have one problem which i don't understand which i don't think is really covered by the video, if you could give me a link or help me out i would be eternally grateful which i have just seen...

(a)Prove that the sum of the first n terms of the series is 1/2n(2a+(n-1)d)

Sean repays a loan over a period of n months....

He repays £19 in the 1st mnth, £147 in da 2nd nd £145 in the 3rd.

He makes his final repayment in the nth month where n>21

[mathstutorbiz]

Sorry but to answer questions via this medium is not that easy, especially not knowing the student, so I must decline your ask of help. I hope you understand. (If I may suggest you visit my site mathstutorDOTbiz where the complete DVD's are available and could help you, sorry that that is not free!!) Still good luck again.

[Fuse1A]

thanx, keep the good work doing

[OWATEMI]

THANK YOU VERY MUCH

[Str0dey]

my current maths teacher at collge is useless, my search on youtube was a last ditched attempt to try and find some help

If i pass maths now it will probably be down to your videos, i wish id of bought the dvd when i started college

fnx Maths Tutor

Chaos713v1 (on firends account)

[Snakebloke]

Have to agree, i wouldn't be surprised if i get an E a D if i do well in statistics. If i have to resit i won't do it at this college and i will DEFINATELY buy the dvd, thanks "mathstutor" whoever your name is :D

[fverv]

oh ok. i didnt realize this was for a dvd. thankyou.

[fverv]

ok. i am having trouble with this. i can do the problems you put up beacuse they are easy. but... i have no clue what to do for say 1/2, 2/3, 3/4, 4/5 ... or 2/3, 4/9, 8/27, 16/81 ... please help...

[mathstutorbiz]

This video clip is only the openning of the DVD that is available from my website mathstutorDOTbiz........... the complete lesson does go on to cover your question/problem

mathstutor

[Kamzui]

Very helpful; thx for putting this on. However, isn't the sigma notation from 1:56 to 2:00 wrong? Since you used ''r=1'' at the bottom and ''n'' at the right side. Shouldn't the letter be the same?

[mathstutorbiz]

well spotted. I do make silly slips. This is when I miss my students in the classroom. I had them trained to let me know when such things happened!

mathstutor

[kamace]

Thank you very much sir.

[mathstutorbiz]

you are most welcome.

mathstutor

[2terence2jones]

you have long nais... too long.

[xxmysteriousEyesxx]

i had no idea what sigma notation was but this has made it very clear and will be a great help for my maths coursework. thanks

[samioni]

pleased to have been of help. mathstutor

[The118team]

I'm doing GCSE and this came really helpful with coursework.

[huskystar]

plz post more topics try to tackle calculus differentiation and integration