Geometric Progression

Question

If the second term of a geometric progression is -4/3 and the third term is 8/3, find a₁ and r

 

a₁ being first term and r being common ratio.

Answer 1

The common ratio, r, is (8/3) / (-4/3), or -2

 

a₂ = a₁r

-4/3= a₁(-2)

2/3 = a₁