12' >(- 1)"-'b. where b = n' 1=1 (n+2) 14"+3 a) Find and simplify bn+1 "q b) Test the given series for convergence.

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A: It can be solved as follows

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A: Here we have to find the quotient difference of a function.

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A: We can solve question no 5 and 6 using chain rule as below.

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Q: THE

A: Please refer to the image below

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A: We will find the second derivative.

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A: limx→a f(x)=L if and only if limx→a- f(x) =L=limx→a+ f(x) .

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A: Given query is to find the derivative of the expression.