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

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232 Functions of Several Variables [Ch. 6<br />

Determ<strong>in</strong>e the character of the s<strong>in</strong>gular po<strong>in</strong>ts of the follow<strong>in</strong>g<br />

curves:<br />

2053. y* = x* -\-x\<br />

2054. (y x 8 2 = ) * 5<br />

.<br />

2055. ay=aV-x'.<br />

2056. jtyjt 2<br />

2057. x* + y 9<br />

3<br />

2058. y*(a = jc x)<br />

f/^O.<br />

3axy = Q (folium of Descartes).<br />

(cissoid).<br />

2059. (x* + y*) 2 2 = a*(x y z<br />

) (lemniscate).<br />

2<br />

2060. (a + x)y* = (a x)x (strophoid).<br />

2061. (x* + y*)(x = a)* ftV (a>0, 6>0) (conchoid).<br />

Consider three cases:<br />

1) a>6, 2) a = 6, 3) a

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