OShow ghat the equation z%-5243=€ has no Solutions on the imeginery anis ond precisely Two Solu tons En the heilf - Plane Rez 70 Hint. On Ihe imaginasy axis, f(z)=z"-Sz²+3-e=?has mo Solution, Since...

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Extracted text: OShow ghat the equation z%-5243=€ has no Solutions on the imeginery anis ond precisely Two Solu tons En the heilf - Plane Rez 70 Hint. On Ihe imaginasy axis, f(z)=z"-Sz²+3-e=?has mo Solution, Since |le=1 cwhile y4 Sy+ 3 73 ,let grz) = z-S+3. 9hen If-g/-19/on the Contour ('m Fégure 3.4. g has Two zeros in the kíght half- planeo iR frqure 3-4