b₁=32 q=1/2 b₇=? b₉=?
b₇=b₁*q⁶=32*(1/2)⁶=2⁵*1/2⁶=2⁵⁻⁶=2⁻¹=1/2.
b⁹=b₁*q⁸=32*(1/2)⁸=2⁵/2⁸=2⁵⁻⁸=2⁻³=(1/2)³=1/8.
Ответ: b₇=1/2 b₉=1/8.
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b₁=32 q=1/2 b₇=? b₉=?
b₇=b₁*q⁶=32*(1/2)⁶=2⁵*1/2⁶=2⁵⁻⁶=2⁻¹=1/2.
b⁹=b₁*q⁸=32*(1/2)⁸=2⁵/2⁸=2⁵⁻⁸=2⁻³=(1/2)³=1/8.
Ответ: b₇=1/2 b₉=1/8.