How to add number from equation to array and display it on chart

Question

Gabriela Ziola 2023-3-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1927350-how-to-add-number-from-equation-to-array-and-display-it-on-chart

评论： Gabriela Ziola 2023-3-12

Hello,

I just stared Matlab on my University but I have never been IT related person. I just got some mandatory tasks to do before first lessons.

We have to calculate the number of individuals in some group after some hours using this formula:

Nt = N0 * (exp(1) ^ (r * t))

r=log(2)/tD

Where N0 (number of individuals) is 100, tD (time of double reproduction) = 5 and t (hours) = 10. Nt is number after set time.

We have to show that on chart showing changes every hour.

After some hours of work and research I came to this:

clear all;

close all;

clc;

Time = [0];

Quantity = [0];

N0 = input('N0 = ');

tD = input('tD = ');

t = input('t = ');

r=log(2)/tD;

i=0,1,9;

for i=i

Nt = N0 * (exp(1) ^ (r * t));

Quantity = Nt;

Time = Time + 1;

end

figure ()

hold on

plot(Time,Quantity)

title('Chart')

xlabel('Time')

ylabel('Quantity')

But it doesn't work.. I'm getting error in that loop.

Can someone help me?

Thank you

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Answer 1

VBBV 2023-3-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1927350-how-to-add-number-from-equation-to-array-and-display-it-on-chart#answer_1191350

编辑：VBBV 2023-3-12

在 MATLAB Online 中打开

clear all;
close all;
clc;
Time(1) = [0]; 
Quantity(1) = [0]; 
N0 = 100 ;
tD = 5;
t = 10;
r=log(2)/tD
for i=1:length(1:1:t)
Nt = N0 * (exp (r * i));
Quantity(i+1) = Nt;
Time(i+1) = Time(i) + 1;
end
figure ()
hold on
plot(Time,Quantity)
xticks(1:10)
title('Chart')
xlabel('Time')
ylabel('Quantity')