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

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486 Appendix<br />

24. Strophoid,<br />

*<br />

u s^-M<br />

2 ! = AT<br />

.<br />

y ax<br />

26. Cycloid,<br />

x = a(f s<strong>in</strong>*),<br />

y a (1 cos /)<br />

28. Cardioid,<br />

= a(l+coscp).<br />

\<br />

25. Bernoulli's lemniscate,<br />

29. Evolvent (<strong>in</strong>volute)<br />

{;::<br />

27. Hypocycloid (astroid),<br />

i x a cos 3<br />

/,<br />

\ y = fl s<strong>in</strong> 8 /<br />

2 2<br />

or A S<br />

-f/y 8 =a v .<br />

of the circle<br />

s<strong>in</strong>*)*

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