How can I plot a graph with certain limitations?
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I need to plot the y=x^2 but only in the interval of (0,10] (half open,half closed interval). How can I do this in MatLab?
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Walter Roberson
2017 年 1 月 19 日
fplot(@(x) x.^2, [eps(realmin), 10])
eps(realmin) is the smallest representable positive floating point number. That is as close as MATLAB numeric processing can get to not including 0 but including limit(epsilon, epsilon > 0), but it is only about 10^(-330) which is not even close to being satisfactory as sufficiently "infinitely small". You can switch to the Symbolic toolbox, but you with it you cannot do much better than 10^(-50000000), maybe 10^(-99999999) but no better, which is still infinitely too large to be a satisfactory approximation of infinitely small.
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