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What o I have to do in order to get rid of the message in ode45 line 309 (error tolerance message). I use try and then I put th...

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Asked 1 year ago

I'm 100% sure that was my doubt. I was thinking about it. Maybe the problem was different workspaces and iquality in the variabl...

Answered 1 year ago

I've got 2 files the first file with a line (1) calls the file (2). (1) P0=fzero(@(P0) estimateSurfacePressure(P0,false,extP...

I'm trying to understand a code and there's the first line of it. Could anyone explain me what exactly this works ? The code is ...

A{1}=[1 2 2; 2 2 2; 3 1 2; 4 5 6; 5 5 6; 7 1 2] ; A{1}(4:5,:) = [] ; it means access the first element of cell 1 (which ...

I came across this script and I've seen h = ... what does it mean? axis(1.2*[-1 1 -1 1]) axis square box on hold o...

If I consider the function react2 and write the function react in the prompt command it will work!! But I want to use only the s...

I Have a line in a program P0=fzero(@(P0) estimateSurfacePressure(P0,false,extPar), [1 25]); and inside es...

1 Answers

I have just found out that ode45(@fun,tspin,x) can have instead of tspin = [value1 value2]. tspin could be a linspace(a,b,c) whe...

Hi guys, What does it mean when we write in a code P0 = fzero (@somefunction, [1, 25]). Does it mean search for an answer in ...

I've got 2 .m files. The line which calls the second file is [f1 q] = fzero(@avaliator,const.guessf1,const) it'll ...

I have this k.range = [-pi/4 pi/2] ; k.init = sqrt(2)/2 ; k.options = odeset('Events',@mystopper); suppose I ...

function eulers_for_mv a = .5 ; t = linspace(0,2) ; dt = t(2) - t(1) ; x = zeros(1,length(t)); v = zeros(1,l...

I had a big problem with a code because of this mistake which looks silly but maybe it's not.. suppose f1 = .4 ; f2 =.51...

if true % code end function elements tspan = [0 1]; inits = [0 1]; [t,y] = ode45(@Y,tspan,inits); plot(t,y) fun...

Suppose I run this code by typing in the command line [t p] = ode45(@spring,[0 4], [0 0]); I don't understand first of all how M...

I learned some things about this. One, even defining rho and G outside the functions "dp" and " deriv_M" it seems that when MAT...

f = @(t,x) [-x(1)+3*x(3);-x(2)+2*x(3);x(1)^2-2*x(3)]; what does "@(t,x)" represent and there's some room between the expre...

Suppose I create a simple matrix y = [ 2 4; 6 1] and then when I plot it using plot like, plot(y,'*') I tried to understand how...

I just would like to know how it works. e.g t = 71 ; c = (t-32)/1.8 ; hey = ['The temperature is , c , 'C'] #...

Hi, I am trying to solve an equation with ode45 but it does not actually give me what it's expect to. The equation is the clas...

I've seen some codes which is actually sometimes called by other codes and then I see some 'pause(0)'. pause makes the code to s...

Hi, I am having a little trouble setting up a simple orbit code so I could plot the orbit. Could anyone see my code? I have al...

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Hello, I'm trying to plot an orbit with the Sun and Jupiter only. I assumed circular orbit and all the simplicity posible...

[IC,SurfaceValues,exitFlag]=fminsearch(@integratePlanetODEs,IC,[],extPar); This is a line of a code and IC could supposedly v...

Suppose I have a structure k with these elements range, init and options. I noticed that since I put k inside ode45 I have an er...

I used debugger to help me out but some things don't make sense for me. y0 which is the initial condition is given as a colu...

Whenever I try to use actual values for constants in a physical problem I get stuck in a 'busy' message from MATLAB. What do I h...

There`s an equation called filament solution by Ostriker. I need to compare his solution to the solution which comes from a sy...