for loop to create array

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Daniel Lennon
Daniel Lennon 2020-12-7
回答： Walter Roberson 2020-12-7
I am trying to create three arrays of concentration. Each array uses some of the same constants, however different calues for Kd and Ji.
The only variable changing in the equation to create a array is time (1 to 300 years).
Any help would be great:
%Given through all
JN = (60 * 10^15)/ 2.12;
Co = 415;
e = 2.71828182845;
V = 4 *10^21;
%Ji and Kd for each part 1,2,3
%1
Ji1=(9.1*10^15)/2.12;
KD1 = (2.5 * 10^-2);
%2
Ji2=(9.1*10^15)/2.12;
KD2 = (1.8 * 10^-2);
%3
Ji3=(14*10^15)/2.12;
KD3 = (2 * 10^-2);
%create arrays
t=1:300;
C1=[];
C2=[];
C3=[];
%Calculation of each part using equation given
for i = 1:300
C1= ((JN + Ji1)/(KD1 * V))+(Co - ((JN + Ji1)/(KD1 * V)))*e^(-KD1*t(i));
end
for i = 1:300
C2= ((JN + Ji2)/(KD2 * V))+(Co - ((JN + Ji2)/(KD2 * V)))*e^(-KD2*t(i));
end
for i = 1:300
C3= ((JN + Ji3)/(KD3 * V))+(Co - ((JN + Ji3)/(KD3 * V)))*e^(-KD3 * t(i));
end

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回答（1 个）

Walter Roberson
Walter Roberson 2020-12-7
No loops
C1= ((JN + Ji1)/(KD1 * V))+(Co - ((JN + Ji1)/(KD1 * V)))*exp(-KD1*t);
Notice exp() and notice t is not subscripted

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