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Arrhenius Equation

Are f and ...

Question

Are $f$ and $g$ both necessarily onto,is $g o f$ is onto?

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Solution

$N o, I f g o f i s o n t o i t i s n o t n e c e s s a r y f & g a r e b o t h o n t o . f i g (i) f i s n o t o n t o f u n c t i o n . f i g (i i) g = o n t o f u n c t i o n . f i g (i i i) g o f i s o n t o f u n c t i o n .$

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Q. If f : A → B and g : B → C are onto functions, show that gof is a onto function.

f : A \to B

g : B \to C

g o f : A \to

f : A \to B

g : B \to C

are onto functions show that gof is an onto function.

Q. Give examples of two functions f : N → N and g : N → N, such that gof is onto but f is not onto.

Q. Give examples of two functions

f : N \to N

g : N \to N

such that gof is onto but

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