Let gn 256 320 400 500 Evaluate sigma25n 1 gn Round your
Let {g_n} = 256, 320, 400, 500, .... Evaluate sigma^25_n = 1 g_n Round your answer to the nearest thousandths place. Let {e_n} = 100, 96, 92, 88, ... where n = 1 for the first term of 100. What does n equal when e_n = -292?
Solution
256,320,400,500......
Its in geometric progression where a1=256 common ratio r= 1.25
Sn=a1(rn-1)/(r-1)= 256(1.2525-1)/24=2812.776
