Description: Use it to find the following five functions, respectively, the definite integral: ∫ ab (1+ x) dx, ∫ ab (2x+3) dx, ∫ ab (ex+1) dx, ∫ ab (1+ x) 2dx, ∫ ab x3dx. One, a, b for the limits of integration, the value to be determined.
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积分函数.cpp