Maximum in For Loop

I need to find the maximum value of the last equation in my for loop as well as the iterative value. How would I do this? For example I need to find the maximum value of z and for what value of x.

for x = 0:10
  y = 3*x;
  z = sqrt(y/2);
end

Answer 1

[Image Analyst]

Try this:

zMax = -inf;
xAtZMax = 0;
for x = 0:10
  y = 3*x;
  z = sqrt(y/2);
  if z > zMax
    % New max found.
    zMax = z;
    xAtZMax = x;
  end  
end
fprintf('The max z is %f that occurs at x = %d\n', zMax, xAtZMax);