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The function f : R rarr R defined by f(x...

The function `f : R rarr R` defined by `f(x) = 7^x + 7^|x|` is

A

a.one- one and onto

B

b.many one and onto

C

c.one-one and onto

D

d.many one and into

Text Solution

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The correct Answer is:
C
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