Question

calcule a soma dos onze primeiros termos da PG ( 2, 4, 8 ... )

me ajudem prfv

Answer 1

Calcular q= a2/a1= q=4/2  q=2
a11=a1.2^10
a11=2.2^10
a11= 2048

S11=a1(q^n-1)/q-1
S11 = 2(2^10 -1)/1
S11= 2(1024-1)
S11= 2.1023
S11 = 2046