PDF-TangentSpiralsWhenstudyingcurvesintheplanedenedviapolarcoordinates,on PDF document
dxisgenerallyamessyaffairInsteadletusmakeananalogyassuggestedbythefollowingtable Cartesian polar curvedenedby yfx rf derivative dy dxf0x dr df0 tangentcurve yf0x0xx0fx0 r