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1.6 Exponentials and logarithms

1.6 Exponentials and logarithms

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Question 32

Jonathan is investigating the spread of a virus measured by the number of daily recorded cases NNN. He believes N=AektN = Ae^{kt}N=Aekt.

a.

Express ln⁡N \ln N\,lnN in terms of ttt

[2]
b.

Plot ln⁡N \ln N\,lnN against t t\,t for this data:

ttt81118
NNN122490

[2]
c.

Using the graph, estimate the value of A A\,A and the value of kkk.

[4]
Markscheme

1.6 Exponentials and logarithms Questions

  1. A Level
  2. /Maths
  3. /1.6 Exponentials and logarithms

104 exam-style questions on WJEC A Level Maths 1.6 Exponentials and logarithms, covering 1.6.1 Exponentials and logarithms, 1.6.2 Exponentials and logarithms, 1.6.3 Exponentials and logarithms, 1.6.4 Exponentials and logarithms, 1.6.5 Exponentials and logarithms, 1.6.6 Exponentials and logarithms, 1.6.7 Exponentials and logarithms, 1.6.8 Exponentials and logarithms, and 1.6.9 Exponentials and logarithms. Each one has a worked solution and a mark scheme showing where the marks go.

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