Using the incremental search method or otherwise to locate one root of the function
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Use Matlab's fzero function or your own method to locate all roots of the function,
f ( x ) = cos ( − 5 x ^3 + 6 x ^2 + 4 x − 3 )
on the interval [1,2] if they exist then plot the function on the interval marking the roots with red circles of size 3.
If there are no roots on your interval then use the incremental search method or otherwise to locate one root of the function and plot it with a red circle of size 3 along with the function.
I have arrived with the code down below but is there a way to add the one that says "If no roots" in the code below
f = @(x)cos(-5.*x.^3+6.*x.^2+4x-3);
fplot(f,[1,2]);
hold on;
for n = 1:0.1:2
k = fzero(f,n);
plot(k, 0,'ro','MarkerSize',3);
end
3 Kommentare
Adam
am 13 Sep. 2019
Well, you need to interpret that exitflag and react accordingly if it reports there was no result.
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