I know that the series b. converges as $\sum \frac{1}{n^p}$ converges for $p>1$, So a. also converges. I want to know the sum.
a.$1+\frac{1}{9}+\frac{1}{25}+\frac{1}{49}+.....$ $b.1+\frac{1}{4}+\frac{1}{9}+\frac{1}{16}+.....$
a.$1+\frac{1}{9}+\frac{1}{25}+\frac{1}{49}+.....$
$b.1+\frac{1}{4}+\frac{1}{9}+\frac{1}{16}+.....$
How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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