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, which is a free tool to produce nice multi-function graphs. You can also save the images for use elsewhere. Here are some example graphs to show what you can do:

\(f(x)=sin(x)\)

\(f(x)=2x+2\) and \(g(x)=3\)

暖暖直播直播app\(f(x)=x^2-4\)