Q. 555.0( 2 Votes )

Mark the correct alternative in each of the following:

Let be defined by Then,

A. f–1(x) = x

B. f–1(x) = –f(x)

C. fof (x) = x

D.

Answer :

Given that


For f-1:



y(5x – 3) = 3x + 2


x ( 5y – 3) = 2 + 3y



So,






fof(x) = x


Hence, option C is correct.

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