1.

If f:A rarr B is a function defined by f(x)=(x^(2)-x)/(x^(2)+2x), then which one of the following is true?

Answer»

A = R - {0, -2}, B = R and f(x) is decreasing function
A = R - {-2}, B = R - {1} and `f^(-1)(x)` is decreasing function
A = R - {0, -2}, B = R - {1} and `f^(-1)(x)` is increasing function
Both f(x) and `f^(-1)(x)` are increasing functions

Answer :C


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