CUET Mathematics 2026 14th May Shift 2 PYQs

Given that the total cost function for x units of a commodity is $C(x) = \dfrac{x^3}{4} + 4x^2 - 8x + 20$. Then the marginal cost when $x=4$ is:

The total cost of producing $x$ generators is given by

TC = $x^3 - 60x^2 + 1500x + 2000$.

The Marginal Cost (MC), when $x = 10$ units is:

If $x = 6t^2$, $y = \frac{6}{t^2}$, then $\frac{d^2 y}{dx^2}$ is equal to :