How to shade area of Integral

Question

Pratik P 2015-9-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/244905-how-to-shade-area-of-integral

评论： Star Strider 2015-9-25

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!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Star Strider 2015-9-24

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/244905-how-to-shade-area-of-integral#answer_193594

在 MATLAB Online 中打开

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
显示 2更早的评论隐藏 2更早的评论

Pratik P 2015-9-25

Exactly what I was trying to do. You sir are good thanks, I owe you a Coffey or beer what ever your flavor is.

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!

请先登录，再进行评论。