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Omidreza Ghafarinejad


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Active since 2015

Master science student of mechanical engineering

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How to define a variable symbolic matrix in mupad?
I have a symbolic expression and I want to differentiate it. The expression is this: Phi=p'*A^-1*B p, A and B are some mat...

circa 6 anni ago | 0 answers | 0

0

answers

Question


How to erase contour beyond a line or multiple lines?
Hi. I have contour of a function. I want to plot this contour over a triangle domain. I have the equations of the triangle bound...

circa 7 anni ago | 0 answers | 0

0

answers

Question


how to write a series over one of the variables??
hi friends. I am writing a code to solve a mathematics problem. I have an expression which includes several variables. I should ...

circa 7 anni ago | 1 answer | 0

1

answer

Question


how to rewrite an equation in terms of another equation?
Hi. I have an equation for example like this: sigma = 4*q*y^3/(b*h^3) and I introduce that: I = b*h^3/12 now I ...

circa 7 anni ago | 1 answer | 0

1

answer

Answered
how to solve system of linear equations with unorganized unknowns?
thanks. it seems that it works. i tested your method on one of my previous problems and the answers was the same except one(the ...

circa 7 anni ago | 0

Question


how to solve system of linear equations with unorganized unknowns?
hi everybody. I have a system of n equations n unknowns and there are two forms of this system. in the first form the system of...

circa 7 anni ago | 2 answers | 1

2

answers

Answered
how to calculate a serie of a function with two variables
thanks people for your responces. i solved the problem. i used "subs" to assign values to my two variables in a loop.

oltre 7 anni ago | 0

Question


how to calculate a serie of a function with two variables
hi everybody. i want to calculate the sum of a serie that has a function which has two variables named 'xi' and 'eta'. 'xi' and ...

oltre 7 anni ago | 4 answers | 0

4

answers