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DDD


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Question


Error in delaunayTriangulation function
Trying to implement the FEM i am using delaunayTriangulation to divide the space. I am getting an error: Error using delaun...

presque 8 ans il y a | 1 réponse | 0

1

réponse

Question


d(phi)/dt=laplaciano(-phi+phi^3-laplaciano(phi)) given boundary conditions and a initial state (strange result)
It is given d(phi)/dt=laplaciano(-phi+phi^3-laplaciano(phi)) to solve in a square 30*30 (L=30). It is also mentioned that p...

plus de 9 ans il y a | 1 réponse | 0

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réponse

Question


convolve two signals using coonv, filter, cconv, freq domain multiplication (this one gives a wrong answer)
only the last one is not giving me an equal answer. u=@(n)1.0.*(n>=2); y=@(n)abs(2.*n+1).*(u(n+1)-u(n-5)); n_x=1:...

plus de 9 ans il y a | 1 réponse | 0

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réponse

Question


Conv two continuous time functions
given y(t) and x(t), it is asked to conv them. Note: x(t)=dirac(t-3)-dirac(t-5). The conv result should sum y(t-3)-y(t-5) but i...

plus de 9 ans il y a | 2 réponses | 0

2

réponses

Question


Stem time convolution using conv, filter, cconv and multiplication in frequency domain
It is asked to graph time convolution using conv, filter, cconv and multiplication in frequency domain. All the answers seem to...

plus de 9 ans il y a | 1 réponse | 0

1

réponse

Question


solve some integrals using trapezoidal rule and a matlab built-in function and to represent the original function in a graph
It is asked to solve some integrals using trapezoidal rule and a matlab built-in function and to represent the original function...

presque 10 ans il y a | 1 réponse | 0

1

réponse

Question


if cycle is not working
Hello! while solving an exercise the if cycle is not working. Is anything wrong? Thanks L=1; xfinal=L; u=[]; ...

presque 10 ans il y a | 1 réponse | 0

1

réponse

Question


richardson extrapolation method wrong
Why is this richardson extrapolation method wrong? function D=f_richardson(f,n,h,x0) D=zeros(n,n); e=zeros(n); for t=1:n...

presque 10 ans il y a | 1 réponse | 0

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Question


bvp using secant method and range kutta 4th order
It is asked to solve m* d^2 y/dt=-g-gama*dy/dt. the values given are alredy in the code what is wrong with this function: __...

presque 10 ans il y a | 1 réponse | 0

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Question


create a function that is the derivate of a f=@(t) function
having a function fa=@(x) x^5-0.4475*x.^4-3.1*x.^3 + 3.085*x.^2-0:962*x+ 0:0943 how to calculate dfa=@(x) diff(fa)...

presque 10 ans il y a | 1 réponse | 0

1

réponse

A résolu


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

presque 10 ans il y a

Question


How to sum functions and get an expression in order to a given variable?
For example, if a have: x=@(t) 1+ t + 3t^2 + 5t^3 + 9t^4; y=@(t) 1+ t + 3t^2 z=@(t) x(t)-y(t) can i get an a...

presque 10 ans il y a | 1 réponse | 0

1

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Question


use f=@(x) as an argument of a function.m
I have the function function [ k ] = New_Raph( f,df,x,tol) x_old =x; x=1000; while abs(x...

presque 10 ans il y a | 2 réponses | 0

2

réponses