[微積] 100清大生科丙組

[peanutrice (花生米)]

請問第七題：

Given n points M_i(x_i,y_i,z_i) , i = 1,2...,n

Find a point P on the sphere x^2+y^2+z^2 = 1

      n  ─
s.t. Σ (PM)^2 is minimum
     i=1

-----------------
用Lagrane 做過

可是有n+1條變數...好多

感謝

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→ opy         :P((Σx_i)/n,(Σy_i)/n,(Σz_i)/n)