Evaluate an integral using the limit definition of the integral. This technique is also used to find the area. Learn how to apply sigma notation and summations to find the value of a definite integral.

▶ Watch
Integrate x^2+x with Definition: https://youtu.be/0HtWA0YStJg
Calc 2 Playlist: https://youtube.com/playlist?list=PLJEsnGh2PECj8lLP0t15qv25DyS8bBW0h

⏰ Time Stamps
0:00 Integral Definition
0:44 Find delta x for integral definition
1:03 Find x sub i
1:57 Putting limit definition of integral together for integral of x+2
3:45 Summation Formulas
6:31 Limit as n approaches infinity

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