how to plot given vector x and y

how to plot given Vectoer

 A(x,y)=4sinxyax-x^2yay Ax

verses X from -4 to 1

[KSSV]

Your expression is not clear....what is a? what is range of x and y?

[Guillaume]

If we copy:

   A(x,y)=4sinxyax-x^2yay Ax

into matlab, we'll get 'Unexpected matlab expression' error (4sinxyax and 2yay are not valid expressions, and the space before Ax is not valid).

Are we supposed to try to decode that expression?