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Anik Faisal


Last seen: plus d'un an il y a |  Actif depuis 2018

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fitting of a sinusoid
Hi Everyone! I have generated energy change (gammas.mat) of a simulation cell as a function of rigid displacement (ubp.mat) o...

plus de 5 ans il y a | 1 réponse | 0

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Can I analytically solve a logarithmic equation using the symbolic toolbox?
I have an equation : where A is a constant. I have tried to solve this equation for 'u' with the symbolic toolbox. I am getting ...

presque 6 ans il y a | 1 réponse | 0

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How do I fit multiple curves with same fitting parameters?
I have figured out the issue with the fitting. The and are also functions of Temperatures and they need to be varied leaving ...

presque 6 ans il y a | 0

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How do I fit multiple curves with same fitting parameters?
I am trying to fit this expression: the 's are stress variables for three different temperatures. I have tried the following bu...

presque 6 ans il y a | 3 réponses | 0

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How to impose a variable temperature distribution for one edge of a rectangular plate while keeping the temperatures of other three edges same and constant?
Hi all, I was trying to plot heat flux lines for a heat transfer problem. The problem specifies a 0.3m by 0.1m rectangular pl...

environ 6 ans il y a | 1 réponse | 0

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Is it possible to plot this solution for a vibrating drum in a polar plot and possibly make a movie/gif for time 0 to 2 seconds?
r=linspace(0,1,100); theta=linspace(0,2*pi,100); tdrum=linspace(0,2,100); fun01=@(a) -besselj(0,2.2048*a); A1=(1/(sqrt(2)*2....

environ 6 ans il y a | 1 réponse | 1

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Is it possible to solve Boundary value problem using symbolic? Also looking for suggestions of any other way to solve this problem.

environ 6 ans il y a | 1 réponse | 0

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solve a differential equation at specific points
I have this differential equation (attached .jpg file). I also have the 'gamma', 'u' and 'tau' values (attached unotfinder.m fil...

plus de 6 ans il y a | 1 réponse | 0

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How do I get real roots only from the Newton Raphson method for solving multivariable equation?
Hi All, I'm using the following lines of codes to call on the new_raph.m function to get solutions for x & y. b0=1; z=...

plus de 6 ans il y a | 1 réponse | 0

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Question


How to solve these two equations for 'tau' and 'b'? All the other symbols are constants. Please help??
<</matlabcentral/answers/uploaded_files/128069/Screen%20Shot%202018-08-07%20at%2012.04.47%20PM.png>> I've tried using the sys...

plus de 6 ans il y a | 1 réponse | 0

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Question


Need to solve equations which take vector inputs. The solv & solu are not supposed to be zero; as the variable R is changing they should change as well and should be vectors. Could anyone help??
syms tau_new b rc=1; x=linspace(1,100,1000); R=exp(1).*x.*rc; b0=.3614/sqrt(2); eqns=[(b...

plus de 6 ans il y a | 1 réponse | 0

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A résolu


Add two numbers
Given a and b, return the sum a+b in c.

plus de 6 ans il y a

A résolu


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

plus de 6 ans il y a

A résolu


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

plus de 6 ans il y a

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:...

plus de 6 ans il y a

Question


Getting complex values for fitting parameters using nlinfit. Can anyone explain the reason why?
Hello everyone, I am using the attached script to fit some data. All the input data for "nlinfit" are real numbers but the fi...

plus de 6 ans il y a | 1 réponse | 0

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Question


What's the difference between gammainc & igamma? Which one should I use to compute incomplete upper gamma function? Which one is scaled??
Incomplete upper gamma function

plus de 6 ans il y a | 1 réponse | 0

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Question


How do I approach fitting these data? I am attaching the modelled.m file which calls on cdf_cal.m function to estimate values for input data that correctly fit cumulative distribution function data (f) provided in the modelled.m file..
I have tried to improve the initial guess (b0) by changing it from 10 to 50 but seems impossible to fit all the data. I have bee...

presque 7 ans il y a | 1 réponse | 0

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