How do you find (dy)/(dx) given y^2=sin(x-1)?

2 Answers
Sep 23, 2017

Explanation:

y^2=sin(x-1)

=>y=sqrt(sin(x-1))

=>dy/dx=d/dx((sin(x-1))^(1/2))=1/2*(sin(x-1))^(1/2-1)*d/dx(sin(x-1))

=>dy/dx=1/(2sqrt(sin(x-1))) * cos(x-1)*d/dx(x-1)

=>dy/dx = cos(x-1)/(2sqrt(sin(x-1)))

Sep 23, 2017

(dy)/(dx)=cos(x-1)/(2sqrt(sin(x-1))

Explanation:

another approach is by implicit differentiation

d/(dx)(y^2)=d/(dx)(sin(x-1)

=>2y(dy)/(dx)=cos(x-1)

(dy)/(dx)=1/(2y)(cos(x-1)

(dy)/(dx)=cos(x-1)/(2sqrt(sin(x-1))