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

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Niklas Kurz
Niklas Kurz il 7 Dic 2020
Commentato: Steven Lord il 15 Dic 2020
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.

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Alan Stevens
Alan Stevens il 8 Dic 2020
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
  2 Commenti
Niklas Kurz
Niklas Kurz il 14 Dic 2020
weird, that
z = sin(x)./(y^2+1)
makes the difference...
Steven Lord
Steven Lord il 15 Dic 2020
See this documentation page for more information about the difference between the / and ./ operators.

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