(二)基本性质 F(dx= F(x+C 2.(I f(xdx) '=f(x) 3. dd f()dx))=f(x)dx 4. kf(x)dx=k f(x)dx, k*0 5.(f(x)±g(x)dbx=|f(x)dx±g(x)d 2021/2/202021/2/20 4 (二)基本性质  1. F'(x)dx = F(x) +C  2.( f (x)dx)'= f (x)  3. d( f (x)dx)) = f (x)dx   4. k f (x)dx = k f (x)dx , k  0    5. ( f (x)  g(x))dx = f (x)dx  g(x)dx