SOLUTION: Integration :Find the area bounded by y=xe^-x, y=0, and x=2

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Question 1176683: Integration :Find the area bounded by y=xe^-x, y=0, and x=2

Answer by math_helper(2461)   (Show Source): You can put this solution on YOUR website!

The first step is to note that the lower limit of integration will be x=0. This is because y=0 is one of the boundaries and y is negative for x<0. So we will have limits of integration of x=0 and x=2.
Use integration by parts:
Let and
giving us and

Recall integration by parts:
= -
= -
= -
=
Evaluate this expression at x=2: -0.4060 (approx)
and at x=0: -1
Subtract the bottom from the top: -0.4060-(-1) = 0.5940 sq units. (to 4 decimal places)


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