CUET · MATHS · PYQ PAPER 2025
If the cost function of a product is given by \(C(x)=\frac{3}{4} x^2-5 x+21\), then the marginal cost when \(x=10\) is
- A 10
- B 21
- C 16
- D 5
Answer & Solution
Correct Answer
(A) 10
Step-by-step Solution
Detailed explanation
\(C'(x) = \frac{d}{dx} (\frac{3}{4} x^2-5 x+21) = \frac{3}{2} x - 5\) \(C'(10) = \frac{3}{2} (10) - 5 = 15 - 5 = 10\)
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