A1 cao, giving aef [3] (b) B1 M1* A1ft dM1* Using any of the subtraction (or eg: addition) laws for dM1* logarithms CORRECTLY Eliminate ln’s eg: or eg: dM1* correctly. gives Make the subject. dM1* P or etc. A1 [8] (c) . So population cannot exceed 5000. B1 [1] (12 Question C4 JUNE 2011 MARK SCHEME Marks Number 1. B1 M1 Any two of A, B, C A1
giving A1 cao, aef [3] (b) B1 M1* A1ft dM1* eg: Using any of the subtraction (or addition) laws for logarithms CORRECTLY dM1* eg: or eg: Eliminate ln’s correctly. dM1* gives Make P the subject. dM1* or etc. A1 [8] (c) . So population cannot exceed 5000. B1 [1] (12 Question Number C4 JUNE 2011 MARK SCHEME Marks 1. B1 M1 Any two of A, B, C A1
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