Mathematics, 16.10.2020 08:01 ROBIOX3551
Consider a geometric sequence with a first term of 4 and a fourth term of -2.916.
a) Find the common ratio of this sequence.
b) Find the sum to infinity of this sequence.
Answers: 2
![4\ th \ term = ar^n-1\\-2.196 = 4r^{4-1} \\-2.196/4 = r^{3} \\r = \sqrt[3]{0.549} \\r = 0.82](/tpl/images/0810/0813/63b71.png)
![4\ th \ term = ar^n-1\\-2.196 = 4r^{4-1} \\-2.196/4 = r^{3} \\r = \sqrt[3]{-0.549} \\r = -0.82](/tpl/images/0810/0813/4fb6d.png)
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Consider a geometric sequence with a first term of 4 and a fourth term of -2.916.
a) Find the commo...
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