random values and plot
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evaluate (x.^3 + x.^(1/4)) .* exp(-2*x) for x = -6:0.2:3
a) Add random variables to each evaluated values.
b) Plot the results against the distribution of x.
HOW I write a and b question ?
5 个评论
Dyuman Joshi
2023-10-28
I assume you have to do this homework assignment on MATLAB.
What exactly does "random variables" mean?
Alptekin
2023-10-28
Alptekin
2023-10-28
John D'Errico
2023-11-25
I see that having gotten an answer to your first question where you made no attempt at all to solve it, now you have posted two new questions, those questions just directly copied from your homework assignment, no effort made at all. I closed them, and will close any future question of that form from you.
Dyuman Joshi
2023-11-25
@John D'Errico, I don't remember this thread fully, however, given the first sentence of my answer, I feel like there should have been a comment from OP showcasing their attempt writing the code for their problem.
That response might have been deleted afterwards.
回答（1 个）
In the code you have written, you are over-writing result in each iteration.
Preallocate the variable and use the loop index to save the value produced in each iteration.
x = -6:0.2:3;
n = numel(x);
%Preallocation
result = zeros(size(x));
for k = 1:n
result(k) = (x(k).^3 + x(k).^(1/4)) .* exp(-2*x(k));
end
random_values = randn(1, n);
results_with_random_values = result + random_values;
%plot
plot(x, results_with_random_values)
x = -6:0.2:3;
result = (x.^3 + x.^(1/4)) .* exp(-2*x);
random_values = randn(1, numel(result));
results_with_random_values = result + random_values;
%plot
plot(x, results_with_random_values)
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2023-11-25
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