(a) Substitutelr = tan(o /2) to show that I secede:h g I
Chapter 7, Problem 143(choose chapter or problem)
(a) Substitutelr = tan(o /2) to show that I secede:h g I +trn- 2 e I -tan-2 +c. (2) 0 =lan-2 (3) (b) Use the trigonometric identity 6 2 to derive our earlier formula I sec e de : ln lsec I + tangl + C J from the solution in pan (a
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