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+52.5tComplete the table below, giving the values of PPP to 3 decimal places.
| ttt | 0 | 0.5 | 1 | 1.5 | 2 |
|---|---|---|---|---|---|
| PPP | 0.447 | 0.945 | 1.733 |
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 ∫022t2+52.5tdt137 exam-style questions on OCR (MEI) A Level Maths 1.10 Numerical Methods (A-level only), covering 1.10.1 Locate roots by change of sign (A-level only), 1.10.2 When change of sign methods fail (A-level only), 1.10.3 Fixed point iteration (A-level only), 1.10.4 Newton-Raphson method (A-level only), 1.10.5 Convergence of iterations (A-level only), 1.10.6 Trapezium rule (A-level only), 1.10.7 Upper and lower bounds using rectangles (A-level only), and 1.10.8 Numerical methods to solve problems (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.