Question

calcule a soma dos 10 primeiros termos da PG ( 1/16 , 1/4 , 1 ... )

Answer 1

a1 = 1/16
a2 = 1/4
q = 1/4 : 1/16 = 1/4 * 16/1 = 16/4 = 4 *****
n = 10

S10 =  1/16 ( 4¹⁰  - 1 ) / ( 4 - 1 )
S10 = 1/16 ( 1048576 - 1 )/3
S10 = 1/16 ( 1048575)/3
S10 = 1/16 ( 349525)
S10 =  349525/16 =