Question

if a={x|-1 equal or lesser than x equal or lesser than 1}, f(x)=x^2,g(x)=x^3, which of the following are surjections? (i) f:A-->A (ii)g:A-->A

please help me

Answer 1

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Ratio of the sides of the two figures (fig 2:fig 1) = 2:1

Ratio of the areas of the two figures (fig 2:fig 1) = 3:1

Ratio of the perimeter of the two figures (fig 2:fig 1) = 2:1