3.积分的性质 1)/f(a)dx f(edz 2)/kf(2)d=k/f(=)d;(k为常数) 3)/[f(x)±g(z)]dz=/f(2)d2±/g(=)dz3. È©5Ÿ 1) Z C f(z)dz = − Z C− f(z)dz; 2) Z C kf(z)dz = k Z C f(z)dz; (kǑ~ê) 3) Z C [f(z) ± g(z)]dz = Z C f(z)dz ± Z C g(z)dz. 12/127