matlab求交点

Question

已知三个方程求交点：1.x^2+y^2=20000 2.z=100 3.0.866*y+0.5*z=0,求(x,y,z)坐标

Answer 1

>> ep1 = 'x^2+y^2-20000';
ep2 = 'z-100';
ep3 = '0.866*y+0.5*z';
[x,y,z] = solve(ep1,ep2,ep3)

x =
129.09868744351293915003538468580
-129.09868744351293915003538468580
y =
-57.736720554272517321016166281755
-57.736720554272517321016166281755
z =

100.
100.

% 结果显示有两个交点 (x1,y1,z1),(x2,y2,z2)