b₂²=b₁*b₃=3/2*3/8=9/16;
1)-3/4; qₓ=b₂/b₁=-3/4:3/2=-1/2;∅ в условии q > 0
2)b₂=3/4; qₐ=b₂/b₁=3/4:3/2=1/2;
Sₐ=b₁/(1-qₐ)=3/2:(1/2)=3;
