If, prove that
Given :
To prove :
Formula used : =
=
= - sinx
If u and v are functions of x,then = u + v
The CHAIN RULE states that the derivative of f(g(x)) is f’(g(x)).g’(x)
y =
squaring on both sides
= + y
Differentiating with respect to x
2y = +
(2y – 1) =
= =
=
=