Question

Numa pg,ai=1/4 e a7=16.calcule a razao dessa pg

Answer 1

1/4 = 1/2² = 2⁻²

16 = 2⁴

A₇ = A₁*q⁶

16 = (1/4)*q⁶

2⁴ = 2⁻²*q⁶

2⁴/2⁻² = q⁶

2⁴⁻⁽⁻²⁾ = q⁶

2⁴⁺² = q⁶

2⁶ = q⁶

q = 2