The German mathematician Karl Weierstrass (18151897) noticed that the substitution will
Chapter 7, Problem 55(choose chapter or problem)
The German mathematician Karl Weierstrass (18151897) noticed that the substitution will convert any rational function of and into an ordinary rationalfunction of .(a) If , , sketch a right triangle or usetrigonometric identities to show that(b) Show that(c) Show that
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