Question

Hello can you help me? I don't understand somethings by this exercise from Induction.

Answer 1

Hello can you help me? I don't understand somethings by this exercise from Induction.
I have load the picture.

What I can't understand is circled in red.

First why the k change I mean, why k assume number value?

In this picture the k dont change:

http://openstudy.com/users/franzmller682#/updates/54a872d1e4b054f0c3b92c0f


Assume it is true for n=n+1

In this we have 2n+2

But in the first power we have (-1)^2n+1 then 2n+1 but we have 2n+2 and that cames in the last power.

Can you make an example with numbers? I mean subtuite n with numer?

thx

Answer 2

please put the actual question in the original post

Answer 3

u mean open question?

Answer 4

I mean in the place where it says "ask a question"

Answer 5

yes I mean it.

Answer 6

ok this I cancelled?

Answer 7

no I edited it and fixed it. I just mean in the future, dont just put a "." like you did, put a question

Answer 8

you didn't have to close this

Answer 9

ok