plot a quadratic equation
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I am to plot a quadratic equation and see how it looks . This is my code :
x=[-1:0.05:3];
f=(3*(x.^2))-(2*x);
plot(f)
xlim([-3 90]);
when i check online graphs fro this equation mine doesnt exactly match ?
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回答（2 个）
Star Strider
2016-2-29
I don’t know what doesn’t ‘exactly match’, but perhaps changing your plot call to:
plot(x,f)
will help.
x=(1:0.5:10);
f=(x.^2+5*x+6);
plot(x,f);
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2016-2-29
2024-7-29
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