计算:1÷(x^-2 + y^-2)
问题描述:
计算:1÷(x^-2 + y^-2)
答
1÷(x^-2 + y^-2)
=x^2y^2/(y^2+x^2)
计算:1÷(x^-2 + y^-2)
1÷(x^-2 + y^-2)
=x^2y^2/(y^2+x^2)