Question

Calcule a soma dos termos de uma p.g finita ( 1,2...512 )

Answer 1

an = a1 * q^n-1
512 = 1 * 2^n-1
2^n-1 = 2^9
n-1 = 9
n = 10

Sn = a1 * (q^n - 1 ) / q - 1
S10 = 1 * ( 2^10 - 1) / 2 - 1
S10 = 1 * 1023
S10 = 1023