(x^-2+y^-2)/(x^-2/3+y^-2/3)-(x^-2-y^-2)/(x^-2/3-y^-2/3)x^-2、y^-2、x^-2/3、y^-2/3分别为:x的-2次方、y的-2次方、x的-2/3次方、y的-2/3次方

问题描述:

(x^-2+y^-2)/(x^-2/3+y^-2/3)-(x^-2-y^-2)/(x^-2/3-y^-2/3)
x^-2、y^-2、x^-2/3、y^-2/3分别为:x的-2次方、y的-2次方、x的-2/3次方、y的-2/3次方

其实很简单的,数学不能怕麻烦,你把分子分母同时乘以想(x*y)^5(xy的5次方)再进行运算,最后结果是2*(xy)^5*(y^3-x^3)/y^10-x^10