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If the mapping f(x) = mx + c, m gt 0 m...

If the mapping `f(x) = mx + c, m gt 0 ` maps `[-1,1]` onto `[0,2]`, then `tan ( tan^(-1). 1/7 + cot ^(-1) 8 + cot ^(-1) 18)` is equal to

A

`f(2/3)`

B

`f(1/3)`

C

`f((-1)/3)`

D

`f((-2)/3)`

Text Solution

Verified by Experts

The correct Answer is:
D
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