derivative of sinx

Submitted by jack on 8. February 2005 - 0:33

I am confused how do i do this

Derivative of Sin(x+y)=x

thanks in advance

Submitted by Tutor on 8. February 2005 - 0:36.

Quote:Derivative of Sin(x+y)=x

Hello

differentiate both sides sin(x+y)=x:
d/dx(sin(x+y)=dx/dx
cos(x+y)(1+dy/dx)=1
cos(x+y) + dy/dx =1
dy/dx= (1-cos(x+y))/cos(x+y)

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