Find derivative at 1 of this complicated function

[sa1]

Homework Statement

find dy/dx at x=-1 .

Homework Equations

sin y^{sin pi*x/2} + 3^1/2/2(sec^-12x) +2^x(tan(ln(x+2)))=0

The Attempt at a Solution

There is coming a term ln(sin pi*x/2) during differentiation which will be a ln of a negative number. Sorry if the problem is too easy .I am just starting differentiation.

 

[Defennder]

Is that really \sin (y^\frac{sin \pi x}{2})?

 

[sa1]

no it is (sin y)^{sin (pi*x/2)}