CUET · MATHS · PYQ PAPER 2023
If \(x=2 t^3\) and \(y=3 t^4\), then \(\frac{d^2 y}{d x^2}\) is equal to :
- A \(\frac{3}{4 t}\)
- B \(\frac{1}{3 t^2}\)
- C \(\frac{2}{3 t}\)
- D \(\frac{3}{2 t^2}\)
Answer & Solution
Correct Answer
(B) \(\frac{1}{3 t^2}\)
Step-by-step Solution
Detailed explanation
\(\frac{dx}{dt} = 6t^2\) \(\frac{dy}{dt} = 12t^3\) \(\frac{dy}{dx} = \frac{dy/dt}{dx/dt} = \frac{12t^3}{6t^2} = 2t\)…
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