Solve for the sum of each geometric series with the following conditions:
1.) a1 = 7; r = 2; n = 6
2) a1 = -1/2; r = 4; n = 8
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Solve for the sum of each geometric series with the following conditions:
1.) a1 = 7; r = 2; n = 6
2) a1 = -1/2; r = 4; n = 8
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hen solving for the sum of a geometric sequence use
1.) 441
sn= a1 • 1-r^n/1-r
s6 = 7 • 1-2^6/1-2
s6 = 7 • 1-64/-1
s6 = 7 • -63/-1
s6 = 7 • 63
s6 = 441
2.)
sn = a1 • 1-r^n/1-r
s8 = -1/2 • 1-4^8/1-4
s8 = -1/2 • 1-65536/-3
s8 = -1/2 • -65535/-3
s8 = -1/2 • 21845
s8 = -10923