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Integration Is a Sum

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x1
0
x2
1
curve
constant line
sine wave
parabola
Integration is a kind of sum. It is easy to realize this by comparing the integration of the function
f(x)=2
with the formula for the area of a rectangle,
b×h
(base times height). Integration is more general, allowing you to find the area under curves such as a sine wave or a parabola.
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