Thread: What is ∫0dx?
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Old 05-06-2008, 11:05 PM   #6
TheMathProf
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Join Date: May 2007
Posts: 428
I actually think the correct answer is C.

Only the definite integral is approximated using area.

The antiderivative, or the indefinite integral, represents a function whose derivative gives you 0. Any constant does this.

Think about it: the derivative of 5 is 0. The derivative of 17 is 0. The derivative of -2/3 is 0.

So when you're asked, what is the antiderivative of 0? You have to say, it's some constant.

Now the definite integral, on any interval [a, b], has to be 0, for the reasons mentioned by dylalien.
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