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Incorrect integral being returned.

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D
D 2011-11-19
getting an odd result when trying to integrate 50 - t.
syms t;
rate = 50- t;
int(rate)
it returns -(t - 50)^2/2 I'm pretty sure the integral should return -(t*(t - 100)/2
Is there a fix for this?
  2 个评论
Walter Roberson
Walter Roberson 2011-11-19
You are correct that that output should be what you expected (or a form of that).
Which MATLAB version are you using?

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Wayne King
Wayne King 2011-11-20
I don't see what is wrong with that antiderivative, maybe it differs by a constant from what you expect, but it is a valid antiderivative.
-(t-50)^2/2 differentiated with respect to t is 50-t
-(t(t-100))/2 differentiated with respect to t is also 50-t
The above two expressions only differ by a constant.

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