1.If f(x)=2x2x+2f(x)=\frac{2^x}{2^x+\sqrt{2}}f(x)=2x+22x, x∈Rx\in\mathbb{R}x∈R, then ∑r=121f(r22)\sum_{r=1}^{21} f\left(\frac{r}{22}\right)∑r=121f(22r) is equal to:Login to continueOnly logged in users canattempt or see the solution.
