Question

Question 24 Find the derivative of the following functions (it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers): (ax^2 + sin x) (p + q cos x)

Class X1 - Maths -Limits and Derivatives Page 318

Answer 1

let u = ax²+sinx , u = p+qcosx

Now using product rule
$(ax^{2} + sinx) \frac{d(p+qcosx)}{dx} + (p+qcosx)\frac{d(ax^{2} + sinx)}{dx}$  

ax²+sinx(-qsinx) + (p+qcosx)(2ax+cosx)