1.ú@(x^sinx)cosx dx=?2.ú@1/(1-x^2)^(1/2) dx=?3.d/dx(x^x^x^x^x^x^x)=?4.ú@2(x^3)--2(x^2)+10/x^2-2x-24 dx =?(n¦³¹Lµ{)5.d/dx{(2x-1)(x^4+2x-1)[5(x^2)](x^3+42x-3)]=?6. Yf(t)=sinx+9x-x^2-44, ¨Df^2001=?