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clc
clear
//Input data
r=8.5;//The compression ratio
sv=1.4;//The specific heat at constant volume in percent
//Calculations
n=1-(1/r)^(sv-1);//The efficiency of the otto cycle
ef=[((1-n)/n)*(sv-1)*(log(r))*(sv/100)]*100;//The percentage change in efficiency of an otto cycle and is negative
//Output
printf('The efficiency decreases by %3.3f percent ',ef)
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