18/07/03 08:11:19.33 HatamsLw.net
(1)
solve([x^2+y^2=36,(x-4)^2+y^2=25]);
[[y=－(15*sqrt(7))/8,x=27/8],[y=(15*sqrt(7))/8,x=27/8]]
solve([x^2+y^2+z^2=25,(x-4)^2+y^2+z^2=36,(x-27/8)^2+(y-15*sqrt(7)/8)^2+z^2=16]);
[[z=(3*sqrt(6))/sqrt(7),y=87/(8*sqrt(7)),x=5/8],[z=－(3*sqrt(6))/sqrt(7),y=87/(8*sqrt(7)),x=5/8]]
(2)
5
(2)はなんじゃこれ？