Question: Consider functions given by the following formulas, which ones are injective? 1) cos (x) 2) sin(x) 3) tan(x) 4) x +x 5) x txtto 6)

 Consider functions given by the following formulas, which ones are injective?

1) cos (x) 2) sin(x) 3) tan(x) 4) x +x 5) x

Consider functions given by the following formulas, which ones are injective? 1) cos (x) 2) sin(x) 3) tan(x) 4) x +x 5) x txtto 6) x2 7) x3 8) x3+x2

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