∑_(y=3)^(x)(- 3/4 )^(y)
You asked:
Evaluate the expression: \(\sum_{y = 3}^{x} {{\left( -\left( \frac{3}{4} \right) \right)}^{y}}\)
MathBot Answer:
\[\sum_{y = 3}^{x} {{\left( -\left( \frac{3}{4} \right) \right)}^{y}} = - \frac{4 \left(- \frac{3}{4}\right)^{x + 1}}{7} - \frac{27}{112}\]