Question

Write the following sum using the sigma notation.
1.) $\frac{1}{3(1)}$ + $\frac{1}{3(2)}$ + $\frac{1}{3(4)}$ + $\frac{1}{3(3)}$ + $\frac{1}{3(8)}$ + $\frac{1}{3(16)}$
2.) 1-$\frac{1}{2}$ + $\frac{1}{4}$ - $\frac{1}{8}$ +...-$\frac{1}{128}$

Answer 1

Answer:

n=1∑4n+1ksum, start subscript, n, equals, 1, end subscript, start superscript, 4, end superscript, start fraction, k, divided by, n, plus, 1, end ...