18.If the function `f:R rarr R` and `phi:R rarr R` be defined by `f(x)=x^(2)-|x|` and `phi(x)=x^(2)+1` then the value of `(phi of)(2):`

Show f:R rarr R defined by f(x)=x^(2)+4x+5 is into

The mapping f: R rarrR , g, R rarr R are defined by f(x) = 5-x^2 and g(x)=3x -4, then find the value of (fog)(-1)

The function f:R rarr R, f(x)=x^(2) is

The function f:R rarr R be defined by f(x)=2x+cosx then f

If f:R rarr R be a function defined as f(x)=(x^(2)-8)/(x^(2)+2) , then f is

The function f:R rarr R defined by f(x) = 6^x + 6^(|x| is

The function f:R rarr R defined as f(x)=(x^(2)-x+1)/(x^(2)+x+1) is

Let f:R rarr R be a function defined as f(x)=(x^(2)-6)/(x^(2)+2) , then f is

If f: R rarr R is defined by f(x)=3x+2,\ define f\ [f(x)]\

If f : R rarr R and g : R rarr R be two mapping such that f(x) = sin x and g(x) = x^(2) , then find the values of (fog) (sqrt(pi))/(2) "and (gof)"((pi)/(3)) .