CUET Mathematics 2025 15 May Shift 1 PYQs

If the function $f(x) = 2x^2 - kx + 7$, is increasing on $[1,2]$, then $k$ lies in the interval

The function $f(x) = \frac{x}{2} + \frac{2}{x}, x \neq 0$ is increasing on

(A) $(-\infty, -2)$

(B) $(-2, 2)$

(C) $(2, \infty)$

(D) $(-1, 1)$

Choose the correct answer from the options given below:

The maximum value of the function $f(x) = x^2(60 - x)$ in [20, 80] is: