Fill in the Blanks $f(x)=5+x^{2}+\tan \left(\frac{\pi x}{2}\right)$ , Where $-1<$ $x< 1$

Short Answer

Fill in the blanks.
Let $f(x)=5+x^{2}+\tan \left(\frac{\pi x}{2}\right)$ , where $-1<$$x< 1$ . $f^{-1}(5)=$ __________ $f\left(f^{-1}(6)\right)=$ __________