a) Express 2 cos x sinx in the form (cos x + p) + q, stating

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a) Express 2 cos x − sin²x in the form (cos x + p)² + q, stating the values of p and q.

b) Use your answer to part (a) to find the maximum and minimum
values of 2 cos x − sin²x.

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Complete Pure Mathematics 1 For Cambridge International AS & A Level

ISBN: 9780198427438

2nd Edition

Authors: Jean Linsky, Brian Western, James Nicholson

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a) Express 2 cos x sinx in the form (cos x + p) + q, stating

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a We can start by expanding cos x p using the formula cos x ...View the full answer

Complete Pure Mathematics 1 For Cambridge International AS & A Level

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