Why does it give an error?

B=[3.0000    4.0000    5.0000    6.0000    7.0000    8.1000    9.0000   10.0000   11.0000   12.0000   16.0000];
f=[0.0067    0.0077    0.0088    0.0098    0.0109    0.0120    0.0130    0.0141    0.0152    0.0162    0.0173];
V9=[323.7612  321.5724  319.4098  317.2738  315.1648  311.0602  311.0294  309.0038  307.0070  305.0393  232.7858];
[a b c]=meshgrid(B f V9);
X=((a./(a+1)).*360.265)+((1./(1+a)).*(1+b).*c)-296.5+62.77;
Y=(b./X);
o = carpetplot(a,b,c,X,Y);
xlabel('Specific Thrust kg/N.s')
ylabel('TSFC N.s/kg')
grid on;

Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error.

To construct matrices, we need to use brackets instead of parentheses.

Why?

Answer 1

[Voss]

B, f, and V9 need to be passed to meshgrid as three separate arguments, separated by commas:

B=[3.0000    4.0000    5.0000    6.0000    7.0000    8.1000    9.0000   10.0000   11.0000   12.0000   16.0000];
f=[0.0067    0.0077    0.0088    0.0098    0.0109    0.0120    0.0130    0.0141    0.0152    0.0162    0.0173];
V9=[323.7612  321.5724  319.4098  317.2738  315.1648  311.0602  311.0294  309.0038  307.0070  305.0393  232.7858];
% [a b c]=meshgrid(B f V9);
[a b c]=meshgrid(B,f,V9);