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VB beginner, encountered a problem during the learning process, BBS, please friends to help solve it
Time：10-15
P=0.5 ∑ (Xi Xi + + 1) + 1 - Yi (Yi) which I from 1 to n Xi, Xi + 1, Yi, Yi + 1 read from a file, (X, Y is the abscissa and ordinate) Do a night has not out, hope BBS friend can help, thank you very much, send me email directly (1527137904 @qq.com)
