Question

Derivative of 3x^2 - 2 cos x

Answer 1

Well, Is it 6x+2 sin x or do I need chain rule?

Answer 2

Distribute the 3.
3x + 3 + 6 = 33
Isolate the x term.
3x = 33 - 3 - 6
Simplify.
3x = 24
Divide.
x = 8
Check answer.
3[(8) + 1] + 6 = 33
3[9] + 6 = 33
27 + 6 = 33
33 = 33

Answer 3

You have the correct answer

Answer 4

Why do I not do it this way? Let me type