🛠️ JEE➗ Maths

Let \(f:[1, \infty) \rightarrow \mathbb{R}\) be a differentiable function such that \(f(1)=\frac{1}{3}\) and \(3 \int_1^…

Q1

Let \(f:[1, \infty) \rightarrow \mathbb{R}\) be a differentiable function such that \(f(1)=\frac{1}{3}\) and \(3 \int_1^x f(t) d t=x f(x)-\frac{x^3}{3}, x \in[1, \infty)\). Let \(e\) denote the base of the natural logarithm. Then the value of \(f(e)\) is

[JEE Advanced 2023]

a

\(\frac{e^2+4}{3}\)

b

\(\frac{\log _e 4+e}{3}\)

c

\(\frac{4 e^2}{3}\)

d

\(\frac{e^2-4}{3}\)

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