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STEP II 2007 question 5 solutionTSR Wiki > Study Help > Subjects and Revision > Mathematics > STEP > STEP II 2007 question 5 solution (i)
(ii) tan is periodic: since (Cue tedious inductive step, or rather obvious conclusion as (iii) Bit of guesswork involved, but several hints give it away; |t| [U]<[/U] 1, the use of tan in part (ii), and the form of the expression suggest an expression in sin or cos. I chose sin: Then the expression for g can be rewritten as: And then another small inductive step... let etc. Solution by generalebriety. |