Plot of x↦1x−x8−14{\displaystyle x\mapsto {\frac {1}{x}}-{\frac {x}{8}}-{\frac {1}{4}}}, made with GNUPlot
+ Tangent at x=-2 : x↦−38x−54{\displaystyle x\mapsto -{\frac {3}{8}}x-{\frac {5}{4}}}
Own work
Xzapro4