∫0^1/2[arcsinx / (根号下1+x^2)]*dx 2.∫-1^1[xe^x2/2]*dx 3.∫0^a/2[xdx / (根号下a^2-x^2)]*dx a>0

问题描述:

∫0^1/2[arcsinx / (根号下1+x^2)]*dx 2.∫-1^1[xe^x2/2]*dx 3.∫0^a/2[xdx / (根号下a^2-x^2)]*dx a>0

1∫(0^1/2)[arcsinx /√(1+x^2)]*dx这个没想好若∫(0^1/2)[arcsinx /√(1-x^2)]*dx可以做∫(0^1/2)[arcsinx /√(1-x^2)]*dx=ʃ(0~1/2)arcsinxd(arcsinx)=1/2(arcsinx)²|(0~1/2=π²/722.∫-1^1[1...