Question

Help

Answer 1

huh?

Answer 2

Is this a medical emergency? If so, please call your local emergency number.

Answer 3

it's math emergency

Answer 4

wats ur question?

Answer 5

These are the pictures that I've uploaded for my question

Answer 6

oh glob, sorry i cant help, thats too hard, bye. :)

Answer 7

I vaguely remember doing this, but I think you want to use the exponential form of cosh and sinh to prove it.

Answer 8

Yeah, noob google series expansion of hyperbolic cosine and sine

Answer 9

So sin z is equal to some summation. You multiply it by i. Work out a few terms in the summation making sure to remember that i^2=-1 and try to simplify it to look like the sinh z formula.

Answer 10

how about first one??

Answer 11

For -1 < p < 1 prove that
\[\sum_{n=0 }^{\infty} p^{n}\cos nx =\frac{ 1= pcos x }{ 1-2pcosx + p^2 }\]

Answer 12

bleh too much effort