Question

Find the derivative of f(x) = -2x2 + 11x at x = 9

Answer 1

\(\dfrac{d}{dx}-2x2 + 11x=\dfrac{d}{dx}-2x2 + \dfrac{d}{dx}11x=\)

Answer 2

@bibby I do not understand

Answer 3

take the derivative of each term and put them together
the derivative of f(x) = -2x2 + 11x is equal to
the derivative of -2x2
plus
the derivative of 11x