Question

Determine a soma dos termos da p.g infinita (1/2,1/6,1/18)

Answer 1

$S_\infty=\frac{a_1}{1-q}$

$S_\infty=\frac{\frac12}{1-\frac13}=\frac{\frac12}{\frac23}=\frac12\cdot\frac32=\frac34$