Differentiate each of the following w.r.t x:


To find: Value of


The formula used: (i)


(ii)


We have,


⇒ Putting x = cosθ


θ = cos-1x … (i)


Putting x = cosθ in the equation


⇒


⇒


⇒


⇒



[From (i)]




Ans)


1