Find the derivative of the function y = 2x2 2 (2x - 1) at the point x = -1?

Assessment: JAMB UTME - Mathematics - 2021 Subject: General Mathematics

Question 1 Report

Find the derivative of the function y = 2x $^{2}$ (2x - 1) at the point x = -1?

-4

-6

Answer Details

y = 2x $^{2}$ (2x - 1)
y = 4x $^{3}$ - 2x $^{2}$
dy/dx = 12x $^{2}$ - 4x
at x = -1
dy/dx = 12(-1) $^{2}$ - 4(-1)
= 12 + 4
= 16

Related Questions