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Fahmy Shandy


Last seen: nästan 4 år ago |  Active since 2019

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What does it mean? (ODE solution)
<</matlabcentral/answers/uploaded_files/312785/Screenshot_20200609-095604_MATLAB.jpg>> Can you explain to me, why was the out...

nästan 4 år ago | 1 answer | 0

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answer

Question


How to select legend in multiple subplot?
And Suppose i have 3 programs in one script. I have 4 subplot and each subplot holds 3 graph. In total, so i have 12 graph. And...

mer än 4 år ago | 1 answer | 0

1

answer

Question


Why 999^999-999^999 is NaN?
The reason i'm asking this because of i'm working on Adam-Bashforth with 20 steps. It has a big number. Maybe has 20 digits? I d...

mer än 4 år ago | 2 answers | 0

2

answers

Question


How to continue subplot within for loop to another for loop?
I'm referring to this question : <https://www.mathworks.com/matlabcentral/answers/359396-subplots-within-for-loops Subploot w...

mer än 4 år ago | 1 answer | 0

1

answer

Question


How to add plot in the outside with 2 for loop ?
Suppose i have 2 for loop in my script. The last for loop is continue the previous for loop and so does the plot. And i know ...

mer än 4 år ago | 2 answers | 0

2

answers

Question


my plotting in for loop running slow (7th Adam Bashfort/6th Adam Moulton and 7th Runge kutta
I have this program. This program is about to solve ODE system and i'm using 7/6 Steps ABM and RK4 as my start value. please tr...

mer än 4 år ago | 1 answer | 0

1

answer

Question


Please correct my MATLAB code about Seventh Order Adam-Bashforth-Moulton for solving ODES (Edit: With ANOTHER EXAMPLE)
clear all; close all; clc; disp('======================================='); disp(' ADAM-BASHFORTH-MOULTON SEVEN STEPS ');...

mer än 4 år ago | 0 answers | 0

0

answers

Question


Force stop the program if the input doesn't satisfies some conditions
Suppose I have a program. And i want to always input the number, that is less or equal than 0,01. I mean, it always $x \leq 0,01...

mer än 4 år ago | 1 answer | 0

1

answer

Question


How to collect a fraction in a certain equation?
Suppose i have this equation : >> syms a b c d e >> f=(a/3)+(b/3)+(c/3)+(d/3)+(e/3) f = 1/3*a+1/3*b+1/3*c+...

mer än 4 år ago | 1 answer | 0

1

answer

Question


An explicit Runge Kutta of Fourteen Order code
I need an explicit Runge-Kutta Method of order fourteen code (In M.File) for solving my ODE system, I think, it's enough for...

mer än 4 år ago | 1 answer | 0

1

answer

Question


For Loop involving n-substitution and creating it as a row vector
Hi, I have this problem: Edit : Sorry there is a big typo, if you spot my another typo please tell me. syms x n=in...

mer än 4 år ago | 1 answer | 0

1

answer

Question


Substitution on symbolic function
I have this program syms t x0=input('x0= '); x1=input('x1= '); x2=input('x2= '); y=input('input your function o...

mer än 4 år ago | 1 answer | 0

1

answer

Question


Simple question about creating row vector
I want to make a row vector like this d= 2 f=(d^(0:5)) And i want the result is something like this ans...

mer än 4 år ago | 1 answer | 0

1

answer

Question


Choose my k-term from matrix and defines by itself on for loop
Suppose i have n×1 matrix before, (column vector), namely "x1" (i'm defining this matrix with x1). I can't write my x1 because o...

mer än 4 år ago | 1 answer | 0

1

answer

Question


How to force reshape for change elements?
m=input('z= '); n=m+1; for i=1:n x(i)=input(['x',num2str(i),'= ']) for k=0:m x1=x(i)^k; ...

mer än 4 år ago | 1 answer | 0

1

answer

Question


Short Question about Multiple cases in for end
I want to make multiple commands in "for loop" like this for j=1:10 && k=0:9 && m=1:11 && n=1:1 x(j)^k + m -2*n e...

mer än 4 år ago | 2 answers | 0

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answers