Mathematics - Functions Question with Solution | TestHub

If $\mathrm{f}(2+\mathrm{x})=\mathrm{a}+{\left[1-(\mathrm{f}(\mathrm{x})-\mathrm{a}{)}^4\right]}^{1/4}$ for all $\mathrm{x}\in \mathrm{R}$, then $\mathrm{f}(\mathrm{x})$ is periodic with period