1.

Let `f:[-1,oo] in [-1,oo]` be a function given `f(x)=(x+1)^(2)-1, x ge -1` Statement-1: The set `[x:f(x)=f^(-1)(x)]={0,1}` Statement-2: f is a bijection.A. Statement 1 is ture, statement 2 is true, statement 2 is a correct explanation for statement 1.B. Statement 1 is ture, statement 2 is true, statement 2 is not a correct explanation for statement 1.C. Statement 1 is ture, statement 2 is false.D. Statement 1 is false, statement 2 is true.

Answer» Correct Answer - C
There is no information about co-domain therefore `f(x)` is not necessarily onto.
Therefore statement 2 is false.
However for `x ge -1, f(x) =(x+1)^(2)-1` is one-one.
Assume that `f(x)` is onto.
Now roots of `f(x)=f^(-1)(x)` lies on line `y=x`.
So we have to find roots of `f(x)=x or (x+1)^(2)-1=x`
` :. x^(2) +x=0`
` :. x=0, -1`
Hence, statement 1 is true.


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