the last of us took place in post-apocalyptic united states.
where did the last of us take place?
post-apocalyptic united states
Na
Na
let us take formula_59 and formula_63 as the unit circle ``u.’’ and formula_64 as the cosine curve





























note that formula_66





























for the transformed curve for formula_67, see the figure.





























the transformed curve formula_68 has the parametric equations





























section::::"n"-curves and their products.:example 2.





























denote the curve called crooked egg by formula_69 whose polar equation is





























its parametric equations are





























let us take formula_73 and formula_74





























where formula_75 is the unit circle.





























the "n"-curved archimedean spiral has the parametric equations





























see the figures, the crooked egg and the transformed spiral for formula_78.





























section::::see also.





























bullet::::- functional-theoretic algebra





























bullet::::- the siluroid curve





























section::::references.
n-curve