How to plot polynomial in matlab
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equation is f(x) = 150x - 400x^2 + 500x^3
Want to plot f(x) for x= 0 to 0.8
need to have a legend
4 个评论
Dyuman Joshi
2024-2-29
This seems like a homework assignment. Show us what you have tried yet.
Sam Chak
2024-2-29
First things first, make sure to bookmark the Help Center, and then search for the keyword 'plot'. You will find the relevant information ans examples at this URL: https://www.mathworks.com/help/matlab/ref/plot.html.
It's always a good idea to start by searching in the Help Center before seeking technical assistance, unless the problem is highly specific and no relevant examples can be found in the documentation.
Madison
2024-3-3
You need to use element-wise power - power, .^
epsilon = linspace(0,0.8,100);
sigma = 150*epsilon - 400*epsilon.^2 + 500*epsilon.^3;
figure;
plot (epsilon, sigma)
xlabel('Strain(ε)');
ylabel('Stress(σ)(kPa)');
title('Stress/Strain for Foam');
grid on;
回答（1 个）
Some homework assistance and solution:
x = linspace(0,0.8,1000);
y = 150*x - 400*x.^2 + 500*x.^3;
plot(x,y)
1 个评论
Dyuman Joshi
2024-2-29
编辑：Dyuman Joshi
2024-2-29
I believe that's solving the problem rather than assisting.
I suggest you edit your answer accordingly.
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2024-3-3
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