∫x^2/1dx=-x/1+C(这个是常用不定积分记住就行)∫x^3根号x/1dx=∫x^(-3.5)dx=(-0.4)x^(-2.5)+C(幂函数积分也是常用的)∫e^x-e^-x/1dx=∫(e^x)²-1/e^xdx =∫(e^x)²-1/1d(e^x) =0.5ln[(e^x+1)/(e^x-1)]+C