The following is the detailed process of definite integral calculation

The following is the detailed process of definite integral calculation


Look at the picture



Finding definite integral (upper 3, lower 0) x ^ 2DX / (x ^ 2-3x + 3) ^ 2





Finding the value of definite integral ∫ (- 1,0) (3x ^ 4 + 3x ^ 2 + 1) / x ^ 2 + 1dx


The idea should be to change the molecule into several formulas with x ^ 2 + 1, and it doesn't matter if there are many constants. 1 / x ^ 2 + 1 is the derivative of arctanx. I hope you can work it out