eqn= Ma.*sqrt(gam.*R.*Ta).*((1+f).*sqrt(T04./Ta).*(1+((gam-1)./2).*Ma.^2).^(-0.5))-1
^ WRONG PLACE
Note: You do not need the dot-multiplier (.*) when multiply a scalar value to a matrix. Use the elementy-wise, dot-multiplier when multiplying two matrices together, element-by-element.
EX:
A = 1;
B = 2;
C = A * B; %OK
A = 1;
B = [1 2 3];
C = A * B; %OK
A = [1 2 3];
B = [1 2 3];
C = A .* B; %OK to use .* multiplier if you want C = [1 4 9].
