How to shade area of Integral
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Hi I have a simple function y(z) = -1*z^3+4*z^2+-5*z+2 I have the integral in range of x= 0-5. I have the plot of the graph. I would like to shade this area on the graph.
What do I do? THANKS!
采纳的回答
Star Strider
2015-9-24
I’m not quite certain what you want. This shades the area between the x-axis and the value of the integral over the interval (0,5):
y = @(z) -1*z.^3+4*z.^2+-5*z+2;
x = linspace(0, 5);
inty = cumtrapz(x,y(x));
figure(1)
plot(x, inty, '-k', 'LineWidth',1)
hold on
patch([x fliplr(x)], [zeros(size(x)) fliplr(inty)], 'g')
hold off
grid
4 个评论
Muthu Annamalai
2015-9-24
Nice!
Star Strider
2015-9-24
Thank you, Muthu!
Pratik P
2015-9-25
Star Strider
2015-9-25
My pleasure!
The sincerest expression of appreciation here on MATLAB Answers is what you have already done, that being your Accepting my Answer. If we ever meet, a coffee or beer together would be nice!
更多回答（1 个）
WAT
2015-9-24
0 个投票
It sounds like you want the area() function.
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