Limit of 1 2 n as n goes to infinity


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Write the definite integral for the summation: the limit as n goes to infinity of the summation from k equals 1 to n of the product of the square of the quantity 1 plus k over n squared and 1 over n.

the integral from x equals 0 to 1 of x squared, dx
the integral from x equals 1 to 2 of the quantity x plus 1 squared, dx
the integral from x equals 1 to 2 of x squared, dx
the integral from x equals 2 to 1 of x squared, dx

Answered by admin @



Sounds like you have

\displaystyle\lim_{n\to\infty}\sum_{k=1}^n\left(1+\frac kn\right)^2\frac1n

which translates to the sum of the areas of n rectangles with dimensions \left(1+\dfrac kn\right)^2 (height) and \dfrac1n (width). This is the right-endpoint Riemann sum for approximating the area under x^2 over the interval [1, 2].


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