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I tried to multiple plot in WolframAlpha using this command from the Forum:

plot {1<=x<=2 1<y<3} and plot {x=4 1<y<3} and plot {1<=x<=2 y=4} and plot {x=4 y=4} and plot {1<=x<=2 5<=y<=6} and plot {x=4 5<=y<=6}

But it's not working. Where is my mistake?

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