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Show that the function f: N->N , given b...

Show that the function `f: N->N` , given by `f(x)=2x` , is one-one but not onto.

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RD SHARMA ENGLISH-FUNCTION-All Questions
  1. Let A={x in R :-1lt=xlt=1}=B . Then, the mapping f: A->B given by f(...

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  2. Let A be the set of all 50 students of class X I I in a central scho...

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  3. Show that the function f: N->N , given by f(x)=2x , is one-one but not...

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  4. Prove that f: R->R , given by f(x)=2x , is one-one and onto.

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  5. Show that the function f : R ->R, defined as f(x)=x^2, is neither one-...

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  6. Show that f: R->R , defined as f(x)=x^3 , is a bijection.

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  7. Show that the function f: R0->R0 , defined as f(x)=1/x , is one-one on...

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  8. Prove that the greatest integer function f: RR rarr RR, given by f(x)=...

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  9. Show that the modulus function f: R->R , given by f(x)=|x| is neith...

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  10. Let C be the set of complex numbers. Prove that the mapping F:C to R g...

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  11. Show that the function f: Rvec given by f(x)=x a+b , where a , b in R...

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  12. Show that the function f: R->R given by f(x)=cosx for all x in R , is...

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  13. Let A=R-{2} and B=R-{1} . If f: A->B is a mapping defined by f(x)=(...

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  14. Let A and B be two sets. Show that f: AxxB->BxxA defined by f(a ,\ b)=...

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  15. Let A be any non-empty set. Then, prove that the identity function on ...

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  16. Let f: N-{1}->N be defined by, f(n)= the highest prime factor of n ...

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  17. Let A={1,2} . Find all one-to-one function from A to A.

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  18. Consider the identity function IN : N->N defined as, IN(x)=x for al...

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  19. Consider a function f:[0,pi/2]->R given by f(x)=sin x and g:[0,pi/2]->...

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  20. Let f:X->Y be a function. Define a relation R in X given by R={(a,b):f...

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