Let 5f(x) + 4f(1/x) = 1/x + 3.... | JEE Main 2023

JEE-Main

08-04-2023_S1

Question

Let $5 f(x)+4 f\left(\frac{1}{x}\right)=\frac{1}{x}+3, x>0$. Then $18 \int_1^2 f(x) d x$ is equal to :

Select the correct option:

10 $\log _{\mathrm{e}}$ 2-6

10 $\log _{\mathrm{e}}$ 2 + 6

5 $\log _{\mathrm{e}}$ 2 + 3

5 $\log _{\mathrm{e}}$ 2 – 3

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Easy

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