3-D-plot doesn't look like on Wolfram Alpha

I'm confused. By typing:

[x,y] = meshgrid(-2:0.2:2)
z = sin(x)./(y.^2+1)
surf(x,y,z)

I receive a totally different plot.

Answer 1

[Alan Stevens]

It looks the same to me as long as you enter

plot sin(x)/(y^2+1) from x=-2 to 2 and y=-2 to 2

into Wolfram Alpha

[Niklas Kurz]

weird, that

z = sin(x)./(y^2+1)

makes the difference...

[Steven Lord]

See this documentation page for more information about the difference between the / and ./ operators.