3 years ago

If [infinity]∑n=0cn9n is convergent, does it follow that the following series are convergent? (a) [infinity]∑n=0cn(−3)n

Mathematics

1 answer:

Pepsi [2]3 years ago

7 0

Given: The series ∑cₙ $9^n$ is convergent

To find: The series ∑cₙ $(-3)^n$ is convergent or not.

Solution: If the radius of convergence R the we can conclude that R≥4

So, the series will converge as -3<9.

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