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The function f : R rarrR is defined as ...

The function `f : R rarrR ` is defined as `f( x) = 3^(-x)`. From the following statements,
I. f is one-one
II. f is onto
III. f is a decreasing function the true statements are

A

Only I,II

B

only II,III

C

only I,III

D

I,II,III

Text Solution

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The correct Answer is:
C
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