Mathematics (AS & A Level) · Oct / Nov 2019 · Paper 31 · Question 4
9709
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The question as text
The number of insects in a population t weeks after the start of observations is denoted by N. The population is decreasing at a rate proportional to Ne−0.02t. The variables N and t are treated as continuous, and it is given that when t = 0, N = 1000 and dN dt = −10.
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4(i)[1]
4(ii)[6]
4(iii)[1]
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