Unable to perform assignment because the left and right sides have a different number of elements.

function g = untitled(x,y,z,t)
  a = [1.2, -0.5, -1.7, 1.7];
  b = [2.3, 1.5, 0.8, 1.4];
  d = [0.2, 1.8, 1.3, -0.5];
  e = [8.9844, 12.6636, 1.6423, 9.927];
 
 
  c=0.047;
 g = zeros(4, 1);
 
 g(1) = (x-a(1)).^2+(y-b(1)).^2+(z-d(1)).^2-(c*(t-e(1))).^2;  
 g(2)= (x-a(2)).^2+(y-b(2)).^2+(z-d(2)).^2- (c*(t-e(2))).^2;
 g(3)= (x-a(3)).^2+(y-b(3)).^2+(z-d(3)).^2- (c*(t-e(3))).^2;
 g(4)= (x-a(4)).^2+(y-b(4)).^2+(z-d(4)).^2- (c*(t-e(4))).^2;
 
end

[Walter Roberson]

You would have a problem if any of x, y, z, or t were non-scalar.

[Haoang Sun]

If my x y z t is constant how should I modify the code to make left side and right side same

Thanks

[Walter Roberson]

If your x, y, z, and t are scalar, then your code already works.

>> untitled(1,2,3,4)

ans =

          7.91511906641776
          3.77419695540336
          11.6077207228184
           13.022399312239

[Srivardhan Gadila]

@Haoang Sun, what do you mean by x,y,z,t are constants?

Clearly the cause of the error is either of x,y,z,t are non-scalars.