How to put "."after variables in a function for mesh command

nc=10;
[D,delta_z] = meshgrid(((-1:1/nc:1)*2.5+7.5)*1.68,((-1:1/nc:1)*0.4+0.6)*1.68);
y1=(7497*D)/3125 - (97253*delta_z)/20000 - (3879766636486669*((2*D)/5 - 3)^2)/562949953421312 - (6722354278789913*((5*delta_z)/2 - 3/2)^2)/1125899906842624 + 6971452376402099829/109951162777600000;
mesh (D,delta_z,y1)

How to put "." after variables correctly in this code?

Answer 1

[Wan Ji]

Those with matrix times matrix or nth power of a matrix should be used with '.'

nc=10;
[D,delta_z] = meshgrid(((-1:1/nc:1)*2.5+7.5)*1.68,((-1:1/nc:1)*0.4+0.6)*1.68);
y1=(7497*D)/3125 - (97253*delta_z)/20000 - ...
    (3879766636486669*((2*D)/5 - 3).^2)/562949953421312 ...
    - (6722354278789913*((5*delta_z)/2 - 3/2).^2)/1125899906842624 ...
    + 6971452376402099829/109951162777600000;
mesh (D,delta_z,y1)