IGCSE, Edexcel, IB and AP Science Courses | Dr Dabour Hub Academy

1.

If $y = \sec(3x)$, then the derivative $\frac{dy}{dx}$ is equal to:

C) $-3csc(3x) cot(3x)$

D) $3sec^2(3x)$

B) $sec(3x) tan(3x)$

A) $3sec(3x) tan(3x)$

2.

The second derivative d²y/dx² of the function y = x⁴ - 2 x³ + 5 is:

4 x³ - 6 x²

24 x - 12

12 x² - 6 x

12 x² - 12 x

3.

If f(x) = |x - 3|, the derivative f'(3) at x = 3:

Does not exist because the left-hand derivative (-1) does not equal the right-hand derivative (+1)

Equals 1

Equals 0

Equals -1

Lesson 1 Quiz: Three-Dimensional Cartesian Coordinates and Vector Operations