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Get Full Access to Discrete Mathematics And Its Applications - 7 Edition - Chapter 2.se - Problem 16e
Get Full Access to Discrete Mathematics And Its Applications - 7 Edition - Chapter 2.se - Problem 16e

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# Suppose that f is a function from the set A to the set B. ISBN: 9780073383095 37

## Solution for problem 16E Chapter 2.SE

Discrete Mathematics and Its Applications | 7th Edition

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Problem 16E

Suppose that f is a function from the set A to the set B. Prove thata) if f is one-to-one, then Sf is a one-to-one function from p(A) to p(B).________________b) if f is onto function, then Sf is an onto function from p(A) to p(B).________________c) if f is onto function, then Sf?1 is a one-to-one function from p(B) to p(A).________________d) if f is one-to-one, then Sf is an onto function from p(B) to p(A).________________e) if f is a one-to-one correspondence, then Sf is a one- to-one correspondence from p(A) to p(B) and Sf?1 is a one-to-one correspondence from p(B) to p(A). [Hint: Use parts (a)-(d).]

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8.1 Integration by Parts ❑ ❑ ❑ ❑ ❑ Deals with: ∫ xe dx, ∫ xcos(2 x)dx∫, l| | d∫ , e c(x)dx , etc… ❑ ❑ ❑ ❑ Consider: u(x) & v(x) 2❑different❑able functions: (❑*v)’=(u*v’)+(u❑*v) &(integrate ' with respect to x) uv= ∫ uv )dx+∫(u' v)dx ∫ uv' dx=uv- ∫ u' vdx ❑ ❑ ❑ ❑ ❑ ❑ udv=uv− vdu ❑ ∫❑ x x xe dx u=x dv=e dx du=dx v=e x Ex. ❑ *Let dv be the easiest part of the integrand ¿ ∫❑ ❑ ❑ ❑ x x x x❑ x x ∫ xe dx=xe − e∫dx ∫ xe dx=xe −e +C ❑ ❑

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##### ISBN: 9780073383095

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