Question

Struggling with array dot operator

I've initialized t = 0:0.1:20; L = zeros(4,4,length(t)); I'm trying to assign values to L as follows: t=0...

7 years ago | 2 answers | 0

Question

Solving a DDE in laplace domain with Pade approximation

I'm trying to solve this: xdot = -Lx(t-1) where x is a 3x1 vector and L a constant 3x3 matrix. The initial conditions for x are ...

7 years ago | 0 answers | 0

Question

Working with dde23 for a simple problem

I'm trying to solve this: xdot = -Lx(t-1) where x is a 3x1 vector and L a constant 3x3 matrix. The initial conditions for x are ...

7 years ago | 1 answer | 0

Question

Solving a non-standard ODE

I'm trying to solve an ODE like this: xdot = r(t)-x, where r(t) is a pre-calculated signal array of size 100. Let x(0) = 0. Ho...

7 years ago | 1 answer | 0

Question

Calculating exact roots of 6th degree polynomial

I've a fat 6x6 matrix E with symbolic variables. I'm trying to compute sqrt(eig(E'E)), ie, the singular values. The answer begin...

7 years ago | 1 answer | 0

Question

Limit of a symbolic expression

Hi, I am trying to use the limit(expr,x,a) function of MATLAB to find the limit of the ratio of two norms with symbolic varia...

8 years ago | 1 answer | 1

Question

Symbolic substitution for multiple variables

Hi, I wanted some explanation on the captioned. Say my N is a 6x6 matrix with 5 symbolic variables and I want to evaluate N a...

8 years ago | 1 answer | 0