plot({(x^2-1)/(x^2+1),1},x=-3..3);

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plot({(x^2-1)/(x^2+1),1},x=-10..10);

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plot({(x^2-1)/(x^2+1),1},x=199..200);

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

plot({(x^2-1)/(x^2+1),1,0.99,1.01},x=10..20,y=.98..1.02);

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

plot({arctan(x),Pi/2,-Pi/2},x=-20..20,color=[red,blue,black]);

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?plotplot(sqrt(x^2+x)-x,x=-10..30);

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