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The largest hydroelectric plant in the UK is found in Northumberland, located at the Kielder reservoir. During its operation, the minimum flowrate discharge of water runs at Q=1.32m1/5 (cumec), however throughout the year, as the reservoir level increases, the flow rate (Q) must be increased to different levels. One of the standard increases, is to change the flow rate from 3.5m3/5 to 7m3/s. Figure I shows a change in the flow rate ejection for the hydroelectric dam over a 210 speriod, represented in cm3/ is for this 3.5 to 7 cumec flow rate change. Figure I: Flowrate (cm3/s) ejection of Hydroclectric Daw us Time (s) graph. Equation (1) reproduces the flow rate cjection data for figure 1 over the 0 to 210 second period. Flow rate (t)=(3.19892+108)(t7)+(2.77042105)(t6)+(0.00928)(t5)+(1.49974)(t4)+ (1.18729102)(t3)+(4.25940103)(t2)+(5.42866=104)(t)+(3.50829106) (Eqn. I) From this derived flow rate information using equation 1, numerical integration can be used to calculate the area under the curve and therefore calculate the volume of water that is discharged through the hydroelectric plant over the timeframe. Use the composite Trapezoidal rule numerical method of numerical integration taught during the module to determine the volume of water discharged during the 210 seconds timeframe represented in Figure 1 and Equation 1. You must obtain an approximation of the volume in m3/s (SI units), with a relative error of less than 0.00002%, when the analytical value is NOT known. During the numerical integration calculations, if the relative error is not reached during a loop, double the number of separations used over the timespan in the calculations for the following calculation cycle. (i) In the command window, display the integral value calculated for volume, the number of sections used in the numerical integration, and the relative error produced for each looped calculation using "fprintf' and associated commands. (ii) Produce a single figure with two subplots, (1) showing the flow rate ( m3/s ) vs. time (t) of the flow rate equation in one plot at a suitable accuracy, and (2) a cumulative volume (m3) graph of the quantity of ejected water over time (s) in the second subplot. (iii) Produce a figure showing the total volume calculated against the number of separations used in each numerical integration calculation; use a logarithmic x-axis scale on the resulting plot. [25 Marks]