a2 = −27 a5 = −8
to: a2 = a1*q a5 = a1 *q4
to: a1*q= −27 i a1 *q4 = − 8
a1 *q4 = a1*q *q3
więc: − 27 *q3 = − 8 => q3 = 827
to q= 23
teraz podstawiając za q obliczamy; a1
a1 *23 = − 27 => a1 = −27*32
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to a1 = − | ||
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