Question: 11-3 A3 Given 7 sin x = x - +... 3! 5! 7! and . 4 cos x = 1 + +... 2! 4! 6!

11-3 A3 Given 7 sin x = x - +... 3!

5! 7! and . 4 cos x = 1 + +... 2!

11-3 A3 Given 7 sin x = x - +... 3! 5! 7! and . 4 cos x = 1 + +... 2! 4! 6! d Show through power series that sin (4x) = 4cos (4x) . dx

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