3 years ago

The diagram shows circle C. Which of these statement is true?

Mathematics

1 answer:

Natali5045456 [20]3 years ago

6 0

Answer:

the answer is b I know how to kill

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3 years ago

Determine the radius of convergence of the following power series. Then test the endpoints to determine the interval of converge

tresset_1 [31]

Answer:

Radius of the convergence is R = $\frac{1}{21}$

and,

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Step-by-step explanation:

Given function : Σ(21x)^k

Now,

Using the ratio test, we have

R = $\lim_{n \to \infty} |\frac{21x^{k+1}}{21x^{k}}|$

R = $\lim_{n \to \infty} |\frac{21x^{k}\times21x^{1}}{21x^{k}}|$

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now,

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and,

Radius of the convergence is R = $\frac{1}{21}$

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The Interval of convergence is $-\frac{1}{21}$

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