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Muhammad Usman


School of Mathematics & Statistics

Last seen: 25일 전 2011 이후 활성

PhD (Scholar) Mathematics

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질문


How to adjust initial condition to nondimensionalization of coupled ODE?
Here is the code for dimenional and non-dimensional form of coupled ODEs using ode45, but both results are not agreeing. Please ...

5달 전 | 답변 수: 0 | 0

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ODE solution using Fourier series
Hello, I am trying to solve first order ode () using Fourier Series. I wrote the code, but I was doing something, please idetif...

5달 전 | 답변 수: 1 | 0

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Calling Euler Method to solve Shooting Method
Hi, I am trying to solve a BVP: y''(x) +5y'(x)+4y(x) = 1 with boundary conditions y(0) = 0 and y(1)=1 using shooting method. ...

6달 전 | 답변 수: 1 | 0

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How to correct the regenerated plot of given analytical solution of ODE?
for for The analytical solution for this ODE is given belown and written as MATLAB in code routine: for t = -log(1-a)...

6달 전 | 답변 수: 0 | 0

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Addition of numbers in array as string
I am following these lines of code, but generating error when I do: x = randi([0,9],1,20); y = randi([0,9],1,20); x_new = st...

8달 전 | 답변 수: 1 | 0

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Addition of numbers in array
Lets' say I have 2 vectors: x = [7 4 6]; y = [1 4 4]; But these are not just vector consider them as A number, i.e., 746 and ...

8달 전 | 답변 수: 1 | 0

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Plot with smaller variation in input argument under user defined function?
I am stuck with a smaller concept that How to Plot with smaller variation in input argument under user defined function? For ex...

9달 전 | 답변 수: 1 | 0

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How to save last three values from for loop?
I just got stuck to save the last three values of r from the for loop, please help me in this regard. yl = 1; rl = [0, yl] ; ...

9달 전 | 답변 수: 1 | 0

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How to combine the result of for loop?
Here is a very simple line of code: x = 3; A = 1:x; for i = 1:length(A) y = repelem(A(:,i),i); Y = y(1,:) end I w...

1년 이상 전 | 답변 수: 1 | 0

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Sum and Difference across row and column
Let say there is square matrix of order n-by-n, and n is odd integer A = rand(3) A = 0.4218 0.9595 0.8491 0...

1년 이상 전 | 답변 수: 2 | 0

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Trouble using fsolve with two non-linear equations and 3 parameter
I think it will works like in this way: function F = eql_coef(x) % x(1) == a % x(2) == d K_H2O = 20.999; K_OH = 1.0478; p ...

1년 이상 전 | 0

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Is this a bug in bar plot
I suggest you to use two additional lines of code highValue=10E15; y = [2 2 3*highValue; 2 5 6*highValue; 2 8 9*highValue; 2 1...

1년 이상 전 | 0

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merge mat files with different size?
Hi, Consider I have different .mat files and I want to merge them all and remove the repeated values, but the first problem I a...

1년 이상 전 | 답변 수: 1 | 0

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need help to plot a mesh
I just want to mesh plot a dirac delta function, can somebody help me to do so. I wrote some lines of code to plot dirac delta ...

2년 이하 전 | 답변 수: 1 | 0

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What is the error in this computation?
Here I want to plot a simple sum. I computed it manually by iterating different values, and then did it same by using for loop,...

2년 이하 전 | 답변 수: 1 | 0

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Error in computing numerical solution?
I am enable to compute numerical solution, as it generates weird Initial conditions (may be) compared to the inintial value of U...

2년 이하 전 | 답변 수: 0 | 0

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Spectral Method without FFT in MATLAB
Can somebody guide me that how spectral method will be implemented in MATLAB to PDE (lets say homogeneous heat equation with per...

2년 이하 전 | 답변 수: 0 | 0

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Specrtal Method for Heat Equation
I have one dimensional homogeneous heat eqaution. I want to solve it numerically using by supposing where Taking time deri...

2년 이하 전 | 답변 수: 0 | 0

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How do i use boundary conditions to find variables in an equation
if you let Lp=constant and make changes in soln = solve(u,eqns,vars); to soln = solve(eqns); you will get a structure soln ...

2년 이하 전 | 0

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답변 있음
setting column of a matrix to zero
You haven't define constants a and z, and a vector mt, so I suppose a=-1, z=4 and mt=rand(1,50) and following lines of code to p...

2년 이하 전 | 0

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How to plot analytical solution in terms of Fourier Series
I want to plot the analytical solution of the equation given below: for x=-1:1 and t=0:0.4:2 for as suitable values of p. I...

2년 이하 전 | 답변 수: 1 | 0

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How can i plot an inline function?
I wrote a code in which i got and inline function as U = Inline function: U(p,t,x) = (372863112183097.*exp(500....

2년 이하 전 | 답변 수: 2 | 0

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Adjust subscript style / height
use the following after the plot command xlabel("y_{" + n + "}", 'Interpreter', 'tex') %for alphabet and xlabel(" \Omega_{"...

약 2년 전 | 0

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I am facing problem with big fraction
Hello everyone, When i am writing the following code, "sumx" returns me value in fraction, i want to show my result in terms of...

약 2년 전 | 답변 수: 0 | 0

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When L is not unique, how can I choose any of L
let say i have a vector S=[ 7 1 15 13 2 14 6 10 12 11 4 8 3 9 5]; and after ...

3년 이하 전 | 답변 수: 1 | 0

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find the longest monotonically increasing subsequence of a sequence of n numbers?
I have algorithm of the longest monotonically increasing subsequence of a sequence of n numbers Let S[1]S[2]S[3]...S[n] be the ...

3년 이하 전 | 답변 수: 3 | 0

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I want to save matrix at each iteration to later use for Multiplication
I have written a code, it is working fne, but i couldnot save the result at each step. clear all; clc a=0:1; b=0:1; c=0...

3년 이하 전 | 답변 수: 1 | 0

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how to call a function one m-file to another m-file
lets say i have one m-file named call1.m having: function t =call1(a,b) a=10; b=5; t=a+b; end and i want to ca...

6년 이하 전 | 답변 수: 1 | 0

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I want to have my error bar graph like given in picture
clear all; clc; C = [0.962 0.9416 0.9606 0.9845 0.9385]; N = [0.9392 0.979 0.948 0 0]; S = [0.9599 0.9276 0.9571 0.93...

6년 이상 전 | 답변 수: 0 | 0

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for loop for different set of values
Hi, i want to run for loop with different set of values as for example for i = 2:6,17:22 Y= 2*i; End Please do it ...

6년 이상 전 | 답변 수: 3 | 0

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