等高线的函数有几项相加,请问怎么写?
=meshgrid(-2:.2:2,-2:.2:3);Z=-cos(x).*sqrt(1-y.^2) +(1/2)*3*y.^2+(2/7)*atan((y.+0.65)/0.07);
contour(Z,20);
可是MATLAB显示Z式的写法有问题?请问怎样写才对?请高手帮忙啊?谢谢!另怎样把contour图的颜色弄成黑色,请教啊? Z=-cos(x).*sqrt(1-y.^2) +(1/2)*3*y.^2+(2/7)*atan((y.+0.65)/0.07);
change to
Z=-cos(x).*sqrt(1-y.^2) +(1/2)*3*y.^2+(2/7)*atan((y+0.65)/0.07);
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