CUET Mathematics 2026 18th May Shift 2 PYQs

The minimum value of $f(x) = e^x + e^{-x}$ is

If the function $f(x) = x^4 - 62x^2 + ax + 9$ has a critical point at $x = 1$, then $a$ is equal to:

The maximum value of $f(x) = \frac{1}{4x^2 + 2x + 1}$ is