Well, i think you got to differentiate , which is sinh(y)=x. This derivate should be 1, because the derivate of x is 1.
For the derivate of , use the fog derivate.
When you differentiate sinh, you got cosh. And cosh is
I think sinh y = x is for first portion. Can you tell me the way how can I direct differentiate this? I tried by using ln x, dy/dx (xy).... etc. But can't solved yet.
Good luck then , i've tried to differentiate the expression of y, and it's far too complicated when the solution is here... I can't even know if i'll be able to get the result they're waiting from you