If $f(x)=-3x^2,$ then $f(x)$ is :
Answer & explanation
Correct answer: option 2
$f(x)=-3x^2$
differentiating wrt (x)
$f'(x)=-6x=0$ (at x = 0)
Using wavy curve method
so increasing in (-∞, 0), decreasing in (0, ∞)
If $f(x)=-3x^2,$ then $f(x)$ is :
Correct answer: option 2
$f(x)=-3x^2$
differentiating wrt (x)
$f'(x)=-6x=0$ (at x = 0)
Using wavy curve method
so increasing in (-∞, 0), decreasing in (0, ∞)