Question:medium

The function $f(x) = x^3 + ax^2 + bx + c, a^2 \le 3b$ has

Show Hint

A cubic function is strictly monotonic if the discriminant of its derivative is $\le 0$.

Updated On: Apr 10, 2026

one maximum value
one minimum value
no extreme value
one maximum and one minimum value

Show Solution

The Correct Option is C

Solution and Explanation

Was this answer helpful?

Questions Asked in MET exam

Let $ D = \begin{vmatrix} n & n^2 & n^3 \\ n^2 & n^3 & n^5 \\ 1 & 2 & 3 \end{vmatrix} $. Then $ \lim_{n \to \infty} \frac{M_{11} + C_{33}}{(M_{13})^2} $ is:

MET - 2024
Determinants

View Solution

Given vectors $\vec{a}, \vec{b}, \vec{c}$ are non-collinear and $(\vec{a}+\vec{b})$ is collinear with $(\vec{b}+\vec{c})$ which is collinear with $\vec{a}$, and $|\vec{a}|=|\vec{b}|=|\vec{c}|=\sqrt{2}$, find $|\vec{a}+\vec{b}+\vec{c}|$.

MET - 2024
Addition of Vectors

View Solution

Given $\frac{dy}{dx} + 2y\tan x = \sin x$, $y=0$ at $x=\frac{\pi}{3}$. If maximum value of $y$ is $1/k$, find $k$.

MET - 2024
Differential equations

View Solution

A real differentiable function $f$ satisfies $f(x)+f(y)+2xy=f(x+y)$. Given $f''(0)=0$, then \[ \int_0^{\pi/2} f(\sin x)\,dx = \]

MET - 2024
Definite Integral

View Solution

The function $f(x) = x^3 + ax^2 + bx + c, a^2 \le 3b$ has

Show Hint

The Correct Option is C

Solution and Explanation

Top Questions on Maxima and Minima

Questions Asked in MET exam