|FUNCTIONSxisrational then Uto) is. xisirrational2)に4) {+x, xis irra

1.	\|FUNCTIONSxisrational then Uto) is. xisirrational2)に4) {+x, xis irrational1-x. xis rationalx, x is rational1 + x, x is irrationalx,xisnational3) 1i1-x, xisirvrational
Answer» when the value of x is rational then, f(x) = x , f(f(x)) = x ... when x is irrational..then , f(x) = 1-x , f(f(x))= 1-(f(x)) = 1-(1-x) = x... so both the functions are same.. and rational and irrational makes up real set. therefore option 1 is correct..

|FUNCTIONSxisrational then Uto) is. xisirrational2)に4) {+x, xis irrational1-x. xis rationalx, x is rational1 + x, x is irrationalx,xisnational3) 1i1-x, xisirvrational

Answer»

when the value of x is rational

then, f(x) = x , f(f(x)) = x ...

when x is irrational..then , f(x) = 1-x , f(f(x))= 1-(f(x)) = 1-(1-x) = x...

so both the functions are same..

and rational and irrational makes up real set.

therefore option 1 is correct..