{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

C4L - FOR EDEXCEL GCE Examinations Advanced Subsidiary Core...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
F OR E DEXCEL GCE Examinations Advanced Subsidiary Core Mathematics C4 Paper L Time: 1 hour 30 minutes Instructions and Information Candidates may use any calculator EXCEPT those with the facility for symbolic algebra, differentiation and / or integration. Full marks may be obtained for answers to ALL questions. Mathematical formulae and statistical tables are available. This paper has seven questions. Advice to Candidates You must show sufficient working to make your methods clear to an examiner. Answers without working may gain no credit. Written by Shaun Armstrong Solomon Press These sheets may be copied for use solely by the purchaser’s institute.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Solomon Press C4 L page 2 1. The number of people, n , in a queue at a Post Office t minutes after it opens is modelled by the differential equation d d n t = e 0.5 t 5, t 0. (a) Find, to the nearest second, the time when the model predicts that there will be the least number of people in the queue. (3) (b)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}