Mathematics, 09.01.2020 00:31 geekymuin

If f : s -> t and g : t -> u, in g o f form. f(u) = f(v) isan
existence equation.
a) if f is 1-1 and g is onto, prove that g o f is 1-1.
b) if f is onto and g is 1-1, prove that g o f is onto.

Answers: 3

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If f : s -> t and g : t -> u, in g o f form. f(u) = f(v) isan
existence equation.

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More questions: Mathematics Another questions

If f : s -> t and g : t -> u, in g o f form. f(u) = f(v) isan existence equation. a) if f is 1-1 and g is onto, prove that g o f is 1-1. b) if f is onto and g is 1-1, prove that g o f is onto.

Answers

Another question on Mathematics

If f : s -> t and g : t -> u, in g o f form. f(u) = f(v) isan
existence equation.
a) if f is 1-1 and g is onto, prove that g o f is 1-1.
b) if f is onto and g is 1-1, prove that g o f is onto.