1
WB JEE 2017
MCQ (Single Correct Answer)
+2
-0.5
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Let for all x > 0, $$f(x) = \mathop {\lim }\limits_{n \to \infty } n({x^{1/n}} - 1)$$, then
A
$$f(x) + f\left( {{1 \over x}} \right) = 1$$
B
f(xy) = f(x) + f(y)
C
f(xy) = xf(y) + yf(x)
D
f(xy) = xf(x) + yf(y)
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