function

Question 1

function definition

Accepted Answer

function from A to B is rule which assigns every elements of set A to unique elements of set B

Question 2

onto functions

Accepted Answer

|A| ≥ |B| , IF B IS CODOMAIN OF A ( injective function)

Question 3

one one function

Accepted Answer

A| ≥ |B| , IF A IS CODOMAIN OF B ( surjective function)

Question 4

Bijective function

Accepted Answer

IF function is injective and surjective both and |A| = |B|

Question 5

can we have a bijective function from Z to R

Accepted Answer

No , | Z | <|R|

Question 6

Equality of two function

Accepted Answer

IF F1 AND F2 FUNCTION IS , F1=F2

Question 7

is fog = gof

Accepted Answer

No

Question 8

fog is one one then g must be one one

Accepted Answer

right

Question 9

if g is one one then fog is one one

Accepted Answer

No

Question 10

fog is onto then f must be onto

Accepted Answer

right

Question 11

condition for inverse function

Accepted Answer

must be onto and one one / ( bijective function)

Question 12

graph of identity function

Accepted Answer

function A tens to B , f(a)=a , for all age belongs to A , graph like y=x

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