由lny=2x^(1/3)*lnx
从缓闹而1/y*y'=2[1/3*x^(-2/3)*lnx+x^(1/3)*1/余答x]=2(1/3*lnx+1)*x^(/2/扰毁罩3)
y'=2(1/3*lnx+1)*x^(/2/3)*y=2(1/3*lnx+1)*x^[2x^(-1/3)]
lny=2x^(1/3)*lnx
1/粗握渣y*y'皮唯=2[1/3*x^(-2/3)*lnx+x^(1/3)*1/x]=2(1/3*lnx+1)*x^(/岩悄2/3)
y'=2(1/3*lnx+1)*x^(/2/3)*y=2(1/3*lnx+1)*x^[2x^(-1/3)]