Question

Sa se scrie primii cinci termeni ai progresiei geometrice $(b_{n})$ , daca b2= -10 si q= $\frac{1}{2}$

Answer 1

b₂=b₁·q
-10=b₁·1/2
b₁=-20
b₃=b₂·q=(-10)·1/2=-5
b₄=b₃·q=(-5)·1/2=-5/2
b₅=b₄·q=(-5/2)·1/2=(-5/4)
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