Plotting a Parametric Equation

1 次查看（过去 30 天）
Maggie Mhanna
Maggie Mhanna 2015-5-22
评论： Walter Roberson 2015-5-22
Suppose that I need to plot B vs A.
A(T) = int (f(x),x,L1(x)>T),
B(T) = int (g(x),x,L2(x)<T),
How can I do it using matlab

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2015-5-22
L2(x)<T might be true for a whole series of non-contiguous x, so the meaning of your integration limits are not clear. Is the meaning that the integral is to be considered the sum of the integrals over each subregion (a, b) where a and b are successive zeros of L2(x)-T?
  1 个评论
Walter Roberson
Walter Roberson 2015-5-22
Suppose you have a function F(T) that returns whatever you mean by int(f(x), x, L1(x)>T) for that one given T. Likewise suppose G(T) that returns the relevant value for your second integral. Then
t=linspace(-20,15,50); %choose boundaries and number of points
A = arrayfun(@F, t) ;
B = arrayfun(@G, t) ;
plot(A, B)

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Calculus 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by