Дано:
[tex]b_{1} = 0.1 \\ b_{2} = 0.3 \\ b_{3} = 0.9[/tex]
Найти:
[tex]b_{4} - ?[/tex]
Решение:
[tex]b_{2} = b_{1}q \\ 0.3 = 0.1q \\ q = \frac{0.3}{0.1} = 3 \\ b_{4} = b_{3}q \\ b_{4} = 0.9 \times 3 = 2.7 \\ b_{4} = 2.7[/tex]
Ответ: б)2,7
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Дано:
[tex]b_{1} = 0.1 \\ b_{2} = 0.3 \\ b_{3} = 0.9[/tex]
Найти:
[tex]b_{4} - ?[/tex]
Решение:
[tex]b_{2} = b_{1}q \\ 0.3 = 0.1q \\ q = \frac{0.3}{0.1} = 3 \\ b_{4} = b_{3}q \\ b_{4} = 0.9 \times 3 = 2.7 \\ b_{4} = 2.7[/tex]
Ответ: б)2,7