Finding integration limit which produces a prescribed value for a definite integral

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James Eder
James Eder 2012-7-19
Consider a function, f(x) which is the definite integral of g(s) from s=constant to s=x. I am looking for an efficient way to determine the value of x which produces a specific value, b, for f(x).
That is, determine x such that f(x)=b.
I would like to have x determined with a high degree of precision.

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回答（1 个）

Walter Roberson
Walter Roberson 2012-7-19
basically you either do a zero search for f(x)-b, or you minimize (f(x)-b)^2

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