Question

b1=8 b3=2 calculati s8?​

Answer 1

Răspuns:

$b1 = 8 \\ b3 = 2 = > b3 = b1 \times {q}^{n - 1} < = > 2 = 8 \times {q}^{2} < = > 8 \times {q}^{2} = 2 = > {q}^{2} = \frac{2}{8} = > q = \frac{ \sqrt{2} }{2 \sqrt{2} } < = > q = \frac{1}{2}. \\ s8 = \frac{b1 \times ({q}^{n} - 1)}{q - 1} < = > s8 = \frac{8 \times ( { \frac{1}{2} })^{8} - 1}{ \frac{1}{2} - 1} < = > \frac{8 \times \frac{1}{256} }{ - \frac{1}{2} } < = > \frac{\frac{1}{32} }{ - \frac{1}{2} } = > s8 = \frac{1}{32} \times ( -2 ) = - \frac{1}{16} .$

Explicație pas cu pas:

Sper că te-am ajutat.