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//Example 27_8
clc();
clear;
//To calculate the decay constant and half life of substance
n_no=0.9 //Units in constant
t=12 //Units in h
lamda=log(1/n_no)/t //Units in h^-1
t1=round(0.693/lamda) //Units in h
printf("The decay constant is lamda=%.7f h^-1\n The Half life is t0.5=%d h",lamda,t1)
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