f'(x) = 4x - 1
Setting f'(x) equal to 0 and solving for x:
4x - 1 = 04x = 1x = 1/4
Therefore, when x = 1/4, the derivative f'(x) is equal to 0.
f'(x) = 4x - 1
Setting f'(x) equal to 0 and solving for x:
4x - 1 = 0
4x = 1
x = 1/4
Therefore, when x = 1/4, the derivative f'(x) is equal to 0.