1+1

87686876876*85876

876876876876^100

?Plot

Plot[Sin[x]+x,{x,0,6Pi}]

Pi

N[Pi]

N[Pi,100]

2.5*Pi

Plot[Sin[x],{x,0,6Pi}]

Plot[Sin[x],{x,0,6Pi},AspectRatio-> Automatic]

Options[Plot]

Plot[x*Sin[1/x],{x,-Pi,Pi}]

Plot[Sin[Tan[x]],{x,-Pi,Pi}]

Plot[x*Sin[1/x],{x,-Pi/40,Pi/40}]

Plot[Abs[x*Sin[1/x]],{x,-Pi/40,Pi/40}]

Plot[Abs[x*Sin[1/x]],{x,-Pi/40,Pi/40},PlotPoints->1000]

Plot[{Sin[x],Sin[2x]},{x,0,2Pi}]

?ParametricPlot

Plot[{Sin[u],Sin[2u]},{u,0,2Pi}]

ParametricPlot[{Sin[u],Sin[2u]},{u,0,2Pi}]

ParametricPlot[{u+Sin[1/u],Sin[2u]},{u,-Pi,Pi}]

ParametricPlot[{Sin[3u],Sin[2u]},{u,0,2Pi}]

ParametricPlot[{Sin[11u],Sin[5u]},{u,0,2Pi}]

ParametricPlot[{Sin[Sqrt[2]u],Sin[5u]},{u,0,200Pi}]