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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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Sec 1] Functions 13<br />

8. F<strong>in</strong>d the rational <strong>in</strong>tegral function f(x) of degree two, if<br />

= and /(3) = 5.<br />

9. Given that f(4) = 2, /(5) = 6. Approximate the value of<br />

/(4, 3) if we consider the function / (x) on the <strong>in</strong>terval<br />

l<strong>in</strong>ear (l<strong>in</strong>ear <strong>in</strong>terpolation of a function).<br />

10. Write the function<br />

0, if<br />

as a s<strong>in</strong>gle formula us<strong>in</strong>g the absolute-value sign.<br />

Determ<strong>in</strong>e the doma<strong>in</strong>s oi def<strong>in</strong>ition of the follow<strong>in</strong>g functions:<br />

11. a) y = x+\; 16. y = x<br />

-<br />

17. / = lo<br />

13. a),= ?E2L<br />

b) (/ = *VV-2. 19. t/=<br />

14**. =1/2 + * **. -<br />

21. Determ<strong>in</strong>e the doma<strong>in</strong> of def<strong>in</strong>ition of the function<br />

22. f(jc) = 2A: 4<br />

y = |/s<strong>in</strong> 2x.<br />

SA;' 5x 8<br />

+ 6A: 10. F<strong>in</strong>d<br />

(-*)l and ^(^) =<br />

23. A function f (x) def<strong>in</strong>ed <strong>in</strong> a symmetric region /<br />

is called euen if f( x) = f(x) and orfd if /( x) = f(x).<br />

Determ<strong>in</strong>e which of the follow<strong>in</strong>g functions are even and which<br />

are odd:<br />

e)<br />

24. Prove that any function f(x) def<strong>in</strong>ed <strong>in</strong> the <strong>in</strong>terval<br />

/

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