Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Explain what is the python doing

[画像:6. A scientist studying the universe has written the Python code below: from pylab import * def rate (z): A = = 0.6 B = 0.5 C = 9.4 zdash = return (zdash) A*exp(-z/C) B*Z to = 0 ZO = float (input("Please enter initial value: ")) float (input ("Please enter final time: ")) time_end = number_of_steps 20 time_step = = time_end/number_of_steps z = zeros(int (number_of_steps+1)) t = zeros(int (number_of_steps+1)) z [0] zo t [0] = to i = 0 print (i,z[i]) while i < number_of_steps: i = i + 1 t[i] z [i] = t[i-1]+time_step = z [i-1]+time_step*rate (z[i-1]) print (i, z[i]) The scientist knows that you have just finished SCIE1000, and so emails it to you to get some advice. You run it, and enter two numbers. It gives the following output: Please enter initial value: 0.1 Please enter final time: 10 0 0.1 1 0.3718254266066964 2 0.567233937130043]
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Transcribed Image Text:6. A scientist studying the universe has written the Python code below: from pylab import * def rate (z): A = = 0.6 B = 0.5 C = 9.4 zdash = return (zdash) A*exp(-z/C) B*Z to = 0 ZO = float (input("Please enter initial value: ")) float (input ("Please enter final time: ")) time_end = number_of_steps 20 time_step = = time_end/number_of_steps z = zeros(int (number_of_steps+1)) t = zeros(int (number_of_steps+1)) z [0] zo t [0] = to i = 0 print (i,z[i]) while i < number_of_steps: i = i + 1 t[i] z [i] = t[i-1]+time_step = z [i-1]+time_step*rate (z[i-1]) print (i, z[i]) The scientist knows that you have just finished SCIE1000, and so emails it to you to get some advice. You run it, and enter two numbers. It gives the following output: Please enter initial value: 0.1 Please enter final time: 10 0 0.1 1 0.3718254266066964 2 0.567233937130043
Transcribed Image Text:3 0.7078576294083201 4 0.8091316697378195 5 0.8821055956118914 6 0.9347074436372816 7 0.9726346885043051 8 0.9999864581494113 9 1.0197143082402373 10 1.033944716658461 11 1.0442103586631264 12 1.0516162493108738 13 1.0569592427060288 14 1.0608140584976962 15 1.063595250817454 16 1.065601867742315 17 1.067049646798249 18 1.0680942305349759 19 1.0688479096897523 20 1.069391699903605
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