Practicing Success
If $f(x)=\left\{\begin{array}{l}x^2 ; x \geq 0 \\ x ; x<0\end{array}\right.$, then fof (x) is : |
$x^2 ; x ; x \geq 0$ $x^4, x \geq 0 ; -x^2 ; x<0$ $x^4, x \geq 0 ; x^2<0$ $x^4, x \geq 0 ; x, x<0$ |
$x^4, x \geq 0 ; x, x<0$ |
$f(x)=\left\{\begin{array}{l}x^2 ; x \geq 0 \\ x ; x<0\end{array}\right.$ $f(f(x))=\left\{\begin{array}{l}(x^2)^2 ; x \geq 0 \\ x ; x<0\end{array}\right.$ |