Applying cubic spline to estimate definite integrals
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Abstract
Evaluating definite integral is of mathematician interests, especially applying with non integrable functions. There are various ways to do so and one of them is evaluating a non analytic integrable function by using an analytic integrable function. If an estimated function is fairly good, we can replace the evaluating definite integral by the actual definite integral. This work aims to evaluating estimated functions by cubic spline method, its applications and definite integrals of the estimated functions. We also present evaluating functions by estimating them in intervals with cubic spline in both analytic integrable and non analytic integrable functions to focus clearly on the applications of using cubic spline for definite integrals.
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