f(x) = x + 1/x হলে, f(1/x) = কত?

A 1 + 1/x²

B x + 1/x

C x² + 1

D x² + 1/x²

Solution

Correct Answer: Option B

দেওয়া আছে, f(x) = x + (1/x)
∴ f(1/x) = (1/x) + {1/(1/x)}
= (1/x) + x