Question

Need Help

Answer 1

You know you can take pictures by pressing FN and PRTSCRN at the same time, right?

Answer 2

What it has to do with the solution?

Answer 3

it has to do that she is telling you how to better present us with the problem so we can do YOUR homework for you.

Answer 4

literally, a screen shot.

Answer 5

I honestly don't know...

Answer 6

sinh 2x = sinh ( x + x)
sinh 2x = cosh x * sinh x + sinh x *coshx

Answer 7

This problem is making use of the identity:
\[\sinh(x+y) = \sinh(x)\cosh(y)+\cosh(x)\sinh(y)\]
So putting y=x:
\[\sinh(x+x) = \sinh(x)\cosh(x)+\cosh(x)\sinh(x)\]