Cody

# Problem 636. Spherical radius given four points

Solution 1929608

Submitted on 10 Sep 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
pts=[0 3 2;1 -1 1;2 1 0;5 1 3]; % c(2 1 3) r=3 y_correct = 3; assert(isequal(Sphere_radius(pts),y_correct))

Undefined function or variable 'a'. Error in Sphere_radius (line 2) -2*a*x(1)-2*b*x(5)-2*c*x(9)+d==0 Error in Test1 (line 3) assert(isequal(Sphere_radius(pts),y_correct))

2   Fail
pts=[1 0 0;0 1 0;0 0 1;-1 0 0]; % c(0 0 0) r=1 y_correct = 1; assert(isequal(Sphere_radius(pts),y_correct))

Undefined function or variable 'a'. Error in Sphere_radius (line 2) -2*a*x(1)-2*b*x(5)-2*c*x(9)+d==0 Error in Test2 (line 3) assert(isequal(Sphere_radius(pts),y_correct))

3   Fail
pts=[1 0 -1;0 1 -1;0 0 0;-1 0 -1]; % c(0 0 -1) r=1 y_correct = 1; assert(isequal(Sphere_radius(pts),y_correct))

Undefined function or variable 'a'. Error in Sphere_radius (line 2) -2*a*x(1)-2*b*x(5)-2*c*x(9)+d==0 Error in Test3 (line 3) assert(isequal(Sphere_radius(pts),y_correct))

4   Fail
pts=[2 0 -2;0 2 -2;0 0 0;-2 0 -2]; % c(0 0 -2) r=2 y_correct = 2; assert(isequal(Sphere_radius(pts),y_correct))

Undefined function or variable 'a'. Error in Sphere_radius (line 2) -2*a*x(1)-2*b*x(5)-2*c*x(9)+d==0 Error in Test4 (line 3) assert(isequal(Sphere_radius(pts),y_correct))

5   Fail
pts=[-5 -1 -3;1 -1 -3;-2 -4 -3;-2 -1 0]; % c(-2 -1 -3) r=3 y_correct = 3; assert(isequal(Sphere_radius(pts),y_correct))

Undefined function or variable 'a'. Error in Sphere_radius (line 2) -2*a*x(1)-2*b*x(5)-2*c*x(9)+d==0 Error in Test5 (line 3) assert(isequal(Sphere_radius(pts),y_correct))