Example 3 Find the area under the curve y = ex from x = 0 to x = 1 and above the x-axis.
Solution :
![](img173.gif)
![](img177.gif)
![](img176.gif)
![](img175.gif)
Example 4 Determine the area contained between the x-axis and the curve y = 1 + x2 + 2 sin x, bound by line x = 0 and to the right of x = p
Solution : Area is given by
![](img179.gif)
![](img178.gif)
![](img181.gif)
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