Plot[Sin[3*x],{x,-5,Pi}]

Plot[Sin[3 x],{x,-5,π},
	PlotStyle->Directive[Hue[0.67`,0.6`,0.6`],Opacity[1.`],
     AbsoluteThickness[1.345`],Dashed]
]

Plot3D[x^2+y^2,{x,-5,5},{y,-5,5}]

Plot3D[(x^2)+(y^2),{x,-5,5},{y,-5,5},Mesh->Automatic,MeshFunctions->{#3&}]

ContourPlot[x^2+y^2,{x,-5,5},{y,-5,5}]

LaTeX

LATEX

x^2*Exp[x^2]*Sin[x]

\(e^{x^2} x^2\sin (x)\)