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A-level MATHEMATICS 7357/2 June 2020 Paper 2
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A-level MATHEMATICS 7357/2 June 2020 Paper 2 1 Which one of these functions is decreasing for all real values of x? Circle your answer. f (x) ¼ ex f (x) ¼ —e1—x f (x) ¼ —ex—1 f (x) ¼ —e—x 2 Which one of the following equations has no real solutions? Tick (3) one box. cot x ¼ 0 ln x ¼ 0 jx þ 1j¼ 0 sec x ¼ 0 [1 mark] [1 mark] box 2 3 8 box 3 Find the coefficient of x in the binomial expansion of 2x — x [3 marks] 4 Using small angle approximations, show that for small, non-zero, values of x x tan 5x cos 4x — 1 ≈ A where A is a constant to be determined.
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a level mathematics 73572 june 2020 paper 2
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