[tex]Formula\ termenului\ general\ al\ unui\ termen\ al\ progresiei\ geometrice\ este:\\b_{k}=b_{1}*q^{k-1}=b_{k-1}*q[/tex]
1) b₁=2, q=3
b₆=2×3⁵=243×2=486
b₇=b₆×3=486×3=1458
2) b₁=3, q=2
b₉=b₁×2⁸=3×2⁸=3×256=768
b₁₀=b₉×2=768×2=1536
3) b₁=1, q=1/3
b₅=b₁×(1/3)₄= 3×1/81 = 3/81 = 1/27
4) b₁₀=(1/5)⁹, q=1/5
b₁₀=b₁×q⁹=b₁×(1/5)⁹ = (1/5)⁹
b1=1
