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Are the following set of ordered pair...

Are the following set of ordered pairs functions? If so, examine whether the mapping is injective or surjective: `{(x ,\ y): x` is a person, `y` is the mother of `x}` (ii) `{(a ,\ b): a` is a person, `b` is an ancestor of `a}`

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Are the following set of ordered pairs functions? If so, examine whether the mapping is injective or surjective:(i) {(x ,\ y): x is a person, y is the mother of x} (ii) {(a ,\ b): a is a person, b is an ancestor of a}

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RD SHARMA ENGLISH-FUNCTION-All Questions
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  2. Let A=[-1,\ 1] . Then, discuss whether the following functions from...

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  3. Are the following set of ordered pairs functions? If so, examine wh...

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  4. Let A={1,\ 2,\ 3} . Write all one-one from A to itself.

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  5. If f: R->R be the function defined by f(x)=4x^3+7 , show that f is a b...

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  6. Show that the exponential function f: R->R , given by f(x)=e^x , is...

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  7. Show that the logarithmic function f: R0+->R given by f(x)=(log)a x...

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  8. Show that a one-one function f : {1, 2, 3}-> {1, 2, 3}must be onto.

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  9. If A={1,\ 2,\ 3} , show that an onto function f: A->A must be one-o...

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  10. Find the number of all onto functions from the set A={1,\ 2,\ 3,\ ...

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  11. Give examples of two one-one functions f1 and f2 from R to R such t...

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  12. Give examples of two surjective function f1 and f2 from Z to Z such...

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  13. Show that if f1 and f2 are one-one maps from R to R , then the product...

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  14. Suppose f1 and f2 are non-zero one-one functions from R to R . Is (...

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  15. Given A={2,\ 3,\ 4} , B={2,\ 5,\ 6,\ 7} . Construct an example of a...

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  16. Given A={2,\ 3,\ 4} , B={2,\ 5,\ 6,\ 7} . Construct an example of a...

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  17. Given A={2,\ 3,\ 4} , B={2,\ 5,\ 6,\ 7} . Construct an example of a...

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  18. Show that f: R->R , given by f(x)=x-[x] , is neither one-one nor onto.

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  19. Let f: N->N be defined by: f(n)={(n+1)/2, if n is odd (n-1)/2, if n i...

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  20. Let R be the set of real numbers. If f: R->R :f(x)=x^2 and g: R->R ...

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