$$\color{rgb(0,0,0)}\frac{5}{10}$$

$$\color{rgb(127,0,0)}\left( 1+\frac{1}{10} \right)^{5}$$

$$\color{rgb(0,0,0)}x_k=\frac{k}{n}=\frac{5}{10}\approx 0.5 $$

$$\color{rgb(127,0,0)}y_k=\left( 1+\frac{1}{n} \right)^k=\left( 1+\frac{1}{10} \right)^{5}\approx 1.61051 $$