Problem - 4342
Show that $$\frac{1}{1+x}=\sum_{k=0}^{\infty}(-1)^nx^n$$
This relation can be obtained immediately by replacing $x$ with $(-x)$ in the conclusion of # 4341
Show that $$\frac{1}{1+x}=\sum_{k=0}^{\infty}(-1)^nx^n$$
This relation can be obtained immediately by replacing $x$ with $(-x)$ in the conclusion of # 4341