Question

find the derivative using product rule:
1. f(x)=(2x^3+1)(x^5-x)

2. f(x)= secx tanx​

Answer 1

Answer:

1.f'(x)=6x^2(x^5-x) + (2x^3+1) (5x^4-1)

=6x^7- 6x^3+ 10x^7- 2x^3+ 5x^4-1

=17x^7+ 5x^4- 8x^3-1