Engineering > QUESTIONS & ANSWERS > Matlab for Engineers, 5th Edition Chapter 8 Homework Solutions Homework_5th_Edition (All)

Matlab for Engineers, 5th Edition Chapter 8 Homework Solutions Homework_5th_Edition

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Matlab for Engineers, 5th Edition Chapter 8 Homework Solutions clear,clc,close all Problem 8.1 A sensor that monitors the temperature of a backyard hot tub records the data shown in Table 8.5. ho ... t_tub=[100,101,102,103,103,104,104,105,106,... 106,106,105,104,103,101,100,99,100,102,... 104,106,107,105,104,104]; % or load hot_tub.dat time = 0:1:24; (a) The temperature should never exceed 105°F. Use the find function to find the index numbers of the temperatures that exceed the maximum allowable temperature. element_high=find(hot_tub>105) element_high = 9.00 10.00 11.00 21.00 22.00 (b) Use the lengthfunction with the results from part (a) to determine how many times the maximum allowable temperature was exceeded. length(find(hot_tub>105)) ans = 5.00 (c) Determine at what times the temperature exceeded the maximum allowable temperature, using the index numbers found in part (a). time(element_high) ans = 8.00 9.00 10.00 20.00 21.00 (d) The temperature should never be lower than 102°F. Use the find function together with the length function to determine how many times the temperature was less than the minimum allowable temperature. length(find(hot_tub<102)) ans = 6.00 (e) Determine at what times the temperature was less than the minimum allowable temperature. element_low=find(hot_tub<102); time(element_low) [Show More]

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