Question: i) Show that I(n) = | cos xdx = sin x cos x + (n - 1) I (n - 2 ) + c, n20
i) Show that I(n) = | cos" xdx = sin x cos" x + (n - 1) I (n - 2 ) + c, n20 n n 6 marks ii) Using your result for part i) above determine. I(4) = cos* xdx 4 marks
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