单词	principal value integral
释义	principal value integral A certain type of improper integral, due to Cauchy, commonly abbreviated to PV. For example, the integral does not converge. There is infinite area above the x-axis and infinite area below it. The integral does not have a limit, as R,S tend to infinity. However, the limit does exist, equalling 0, and this would be its PV. Similarly, an integral can be assigned a PV of 2, by adding the integrals on (0,1–ε) and (1 + ε,2) and letting ε tend to 0.
随便看	instantaneous code instrumental understanding integer integer factorization integer part integer programming integrable integrable system integral integral calculus integral domain integral equation integral test integral transform integrand integrating factor integration integration by parts interacting variables intercept interest interior interior angle interior angle interior of a set

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