Question

how do you evaluate \[\sum_{i=1}^{\infty}3(-1/4)^i\]

Answer 1

what do you mean by evaluate

Answer 2

like how do you solve it?

Answer 3

The expansion of that expression is
\[3\times\left( -1/4^{1} + 1/4^{2} - 1/4^{3} + 1/4^{4} - 1/4^{5} + ...\right)\]

Answer 4

thanks :)