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3.8 Numerical Methods (A-level only)

3.8 Numerical Methods (A-level only)

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Question 71

During a test flight of a high-performance drone, the power consumption rate PPP (in kW) is monitored over a 2-minute interval. The rate at time t t\,t minutes is modelled by the function:

P=2.5t2t2+5 P = \frac{2.5^t}{\sqrt{2t^2 + 5}} P=2t2+5​2.5t​
a.

Complete the table below, giving the values of PPP to 3 decimal places.

ttt00.511.52
PPP0.4470.9451.733
[2]
b.

Use the trapezium rule, with all the values of PPP from the completed table, to find an approximate value for the total energy consumed over the interval:

∫022.5t2t2+5 dt \int_{0}^{2} \frac{2.5^t}{\sqrt{2t^2 + 5}} \, dt ∫02​2t2+5​2.5t​dt
[3]
Markscheme

3.8 Numerical Methods (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.8 Numerical Methods (A-level only)

129 exam-style questions on WJEC A Level Maths 3.8 Numerical Methods (A-level only), covering 3.8.1 Numerical Methods (A-level only), 3.8.2 Numerical Methods (A-level only), 3.8.3 Numerical Methods (A-level only), 3.8.4 Numerical Methods (A-level only), and 3.8.5 Numerical Methods (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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