19. Discuss the convergence of the series x²(log 2)9 + x³ (log 3)2 + x^(log 4) +

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A: Here , f(x) = x3-3x2-1 We find required value.

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A: Given series is

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A:

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Q: Represent this function by a power series. Then find the interval of convergence. f(x)= x/(9+x^2)

A:

Q: Evaluate the infinite series by identifying it as the value of a derivative of a geometric series.…

A: