Plus sign is adding error to code?? Help Please??

Here is the code i am using. I was able to fix it however, now its highlighting the plus sign as an error. Can anybody help?? The original function is:

F(x,y)=xy-lnx-y^2/2+C

%

[X,Y] = meshgrid(-3:.01:3, -4:.01:4);

contour(X, Y, ((X.*Y. + ln(X.)+((Y.^2)./2))))

hold on

Answer 1

[KSSV]

[X,Y] = meshgrid(-3:.01:3, -4:.01:4);
Z = ((X.*Y + log(X)+((Y.^2)./2))) ;   % Z is complex check
contour(X, Y,real(Z) )

There is .+, only +.

Answer 2

[Walter Roberson]

You have

Y. +

notice the dot before the space before the +