Q. 145.0( 3 Votes )

Mark the correct alternative in the following:

If then f(2) is equal to

A.

B.

C. -1

D. None of these

Answer :

eqn.1

Replace x by 1/x in eqn.1;


eqn.2


Multiply eqn.1 by 2 and eqn.2 by 3 and add them..


On adding, we get






Option A is correct.

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