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Check the injectivity and surjectivity o...

Check the injectivity and surjectivity of the following function .
`f: [-1,1] rarr [-1,1] , f(x) = x |x|`

A

one - one and onto .

B

many - one and onto .

C

many - one and not onto .

D

one - one and not onto.

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The correct Answer is:
A
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KUMAR PRAKASHAN-RELATIONS AND FUNCTIONS -Textbook based MCQs
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  2. f:R-{q} rarrR -{1},f(x) = (x-p)/(x-q), p ne q , then f is .........

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  18. The function f: R rarr R ,f(x) = 5x+7 then the function f is ............

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  19. The number of binary operation on set {1,2} is .......

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