()dyfxygxdx.g(x)=0()0dydxfxy.g(x)≠0()()dyfxygxdx.()0dydxfxy(),fxdxyCeC()()dyfxygxdx()()()+().fxdxfxdxfxdxyCeegxedxC121.1sinxyxyx1sin(),()x,fxgxxx11sin()dxdxxxxyeCedxxlnlnsin()xxxeCedxx1(sin)Cxdxx1(cos).CxxC:..1.()654()32()200300400()500600()800600400()2000OPQQScdPQDabP,,,0abcdacPbdadbc...
()dyfxygxdx.g(x)=0()0dydxfxy.g(x)≠0()()dyfxygxdx.()0dydxfxy(),fxdxyCeC()()dyfxygxdx()()()+().fxdxfxdxfxdxyCeegxedxC121.1sinxyxyx1sin(),()x,fxgxxx11sin()dxdxxxxyeCedxxlnlnsin()xxxeCedxx1(sin)Cxdxx1(cos).CxxC:..1.()654()32()200300400()500600()800600400()2000OPQQScdPQDabP,,,0abcdacPbdadbc...