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Pinco


Active since 2012

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pdepe for a fourth-order de
any ideas?

mer än 7 år ago | 0

Question


pdepe for a fourth-order de
Hi everyone. I'm trying to solve the following pde: <<https://dl.dropboxusercontent.com/u/45403015/web2/latex-image-1.pdf>> ...

mer än 7 år ago | 1 answer | 0

1

answer

Question


bvp4c: a singular Jacobian encountered
Hi everybody! I'm trying to solve the following second order differential equation with known boundary conditions: global a...

ungefär 9 år ago | 1 answer | 0

1

answer

Question


second order nonlinear ode with polynomial terms
Hi everyone! I would resolve the following nonlinear differential equation: f(Y) + b(Y) (Y')^2 + g(Y) Y'' = A where Y i...

ungefär 9 år ago | 1 answer | 0

1

answer

Question


coupled partial differential equation (system of pde)
Hi everyone! I have to solve the following system of two coupled partial differential equations: dY/dt = a + b(Z-Y) + R (d^2 ...

ungefär 9 år ago | 0 answers | 0

0

answers

Question


coupled partial differential equation (pde)
Hi everyone! I have to solve the following system of two coupled partial differential equations: dY/dt = a + b(Z-Y) + R (d^...

ungefär 9 år ago | 0 answers | 0

0

answers

Question


ODE: equation solution problem
Hi everyone! I'm using ode solvers for the first time, and I have some problems. I want to resolve y'(x) + 3 y(x) - 6x = 0, ...

mer än 9 år ago | 1 answer | 0

1

answer

Solved


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:...

mer än 9 år ago

Question


Fitting with constrained coefficients
Hi everyone! I created a fittype object, but I want to impose constrained coefficients and fixed value, for example: ...

nästan 10 år ago | 1 answer | 0

1

answer

Question


Improving modal analysis code
Hi everyone! My code resolves a dynamic problem with coupled equation, so I study this problem in the modal space. I have ...

nästan 10 år ago | 1 answer | 0

1

answer

Question


GUI: draw 2 point
Hi everyone! I'm developing a GUI, and now I have a problem. When I push DRAW button I want to click two times on the image i...

nästan 10 år ago | 1 answer | 0

1

answer

Question


fitting data with specific function
Hi everyone! I have some experimental data and I have to fit it. Hi want to use a specific function, i.e y(x) = (C*x^a)/Gamma(1...

ungefär 10 år ago | 1 answer | 0

1

answer

Question


polar plot
Hi everyone! I want to plot a function like that: <http://i44.tinypic.com/hu3v2q.jpg> the plot is in fig. 138 (c) and its...

ungefär 10 år ago | 0 answers | 0

0

answers

Answered
save pig image
Now my code is: t = 'P10307'; u = 65; n = 1; for i = 1:12 name = [t num2str(u) '.JPG']; A = imread(name); ...

ungefär 10 år ago | 0

Question


save pig image
this is my code: t = 'P10307'; u = 65; n = 1; for i = 1:12 name = [t num2str(u) '.JPG']; A = imread(name); ...

ungefär 10 år ago | 3 answers | 0

3

answers

Question


round numeric 0
Hi everyone! I have a matrix like this: A=[ 1 , .3*10^-8 , .2*10^-8 , .2*10^-8; . 3*10^-8; 1; .2*10^-8; .2*10^...

mer än 10 år ago | 2 answers | 0

2

answers