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Unformatted text preview: Core Mathematics C4 For Edexcel Advanced Level Paper J Time: 1 hour 30 minutes Instructions and Information Candidates may use any calculator EXCEPT those with the facility for symbolic algebra, differ- entiation and/or integration. Full marks may be obtained for answers to ALL questions. The booklet Mathematical Formulae and Statistical Tables, available from Edexcel, may be used. When a calculator is used, the answer should be given to an appropriate degree of accuracy. Advice to Candidates You must show sufficient working to make your methods clear to an examiner. Answers without working may gain no credit. Published by Elmwood Press 80 Attimore Road Welwyn Garden City Herts. AL8 6LP Tel. 01707 333232 These sheets may be copied for use solely by the purchasers institute. Elmwood Press 1. Oil is poured onto a flat surface and forms a circular film. The area of the circle increases at a steady rate of 40 cm 2 s 1 ....
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