点M(4,-3,5)到x轴的距离为m,到xOy坐标平面的距离为n,则m²+n=
问题描述:
点M(4,-3,5)到x轴的距离为m,到xOy坐标平面的距离为n,则m²+n=
答
m² = (-3)² + 5² = 34
n = 5
m² + n = 39