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

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324 _Differential Equations_[Ch. 9<br />

2712. (x<br />

2713. (xy-x)y" + xy' t<br />

+ yy' 2y' = Q, y = \n(xy).<br />

Form differential equations of the given<br />

families of curves<br />

(C, C lt C,, C, are arbitrary constants):<br />

2714. y = Cx.<br />

272l i n *.= i +ay<br />

2715. y = Cx*. y<br />

4 ,<br />

'<br />

( a parameter).<br />

2716. *>=-.2C*.<br />

2717. *' + ii&.<br />

y<br />

971Q yr<br />

2719. *-.<br />

^<br />

2724.

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