# Definite Integral as the Limit of a sum BrainMass Expert explains

Calculus

Integral Calculus(I)

Definite Integral as the Limit of a sum

Method of Summation

Definite Integral

It is an explanation for finding the integral by using the method of summation(part I).

Find by the method of summation the value of:

(a) âˆ« e^( - x)dx, where the lower limit is a and the upper limit is b,

i.e., integral of e^( - x), where the lower limit is a and the upper limit is b.

(b) âˆ« e^( kx)dx, where the lower limit is a and the upper limit is b,

i.e., integral of e^( kx), where the lower limit is a and the upper limit is b.

https://brainmass.com/math/integrals/definite-integral-limit-sum-brainmass-expert-explains-41653

#### Solution Preview

Calculus

Integral Calculus(I)

Definite Integral as the Limit of a sum

Method of Summation

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#### Solution Summary

This solution is comprised of a detailed explanation for finding the value of the definite integral by

using the method of summation. It contains step-by-step explanation.