The study and application of differential equations in pure and applied mathematics, physics, meteorology, and engineering. | Contact experts in Differential Equations to get answers
4,692 views 589 posts
Questions related to Differential Equations
why we want to find positive solutions of differential equations.? What is their advantages or applications?
03 March 2016 10,160 1 View
Here there are three equations, two being the differential equations, and the third one is the solution. I would like to know how to reach this solution.
03 March 2016 9,751 2 View
In Arrow-Hahn's textbook 'General competitive Analysis', there is a sentence ‘ a bounded function f(t) where t>=0 has a limit point’. Please teach me the definition of a limit point of a...
03 March 2016 2,300 10 View
i am working on my postgrad thesis, and i am going no where in it. i am working on kalman filter which is very difficult for me to design. i need to know what i should do if i have few almost 7...
03 March 2016 3,999 3 View
That is differences between constant delay and continuous distributed delay?
03 March 2016 1,323 0 View
I need to create DE's for a research experiment within two week and I really need help. I have tried Maple, Matlab, and STEM. I do not know which program is the best or how to program either...
03 March 2016 6,583 1 View
Bubble dynamics research has many difficulties due to nonlinearity of the system of differential equations, so can we overcome on this difficulties by complex analysis techniques? I wait for any...
03 March 2016 1,733 3 View
I need researchers of Fredholm integro differential equation of first kind
25 February 2016 5,482 3 View
My function values are going negative while i need to restrict it to zero. How do i do that?(optimal control problem)
12 February 2016 3,691 3 View
In the process of simulating a periodic HIS, a Floquet-Port needs to be assigned at an appropriate height over the surface. How much is that height supposed to be? and how can I be so sure of the...
08 February 2016 4,370 17 View
02 February 2016 6,478 4 View
It's a simple, constant coefficients, linear, first order delay equation x'(t) = A1x(t-t1) +A2x(t-t2)+...+Amx(t-tm)+ w(t) The Ai are constant matrices, the ti are constant delays and the w(t) is...
02 February 2016 6,389 7 View
For example: y''+ay'+(b-ci)=0
02 February 2016 8,911 1 View
02 February 2016 5,599 16 View
A numerical method for solving either fredholm or volterra IDE
02 February 2016 8,319 1 View
I can think of many situations in which the assumptions of the Implicit Function Theorem do not hold but most of the results of the theorem can be recovered. The example of f(x,a) = a + x^3 comes...
02 February 2016 946 2 View
the governing differential equation of the temperature excess is recognized as per the Euler equation
02 February 2016 1,114 2 View
Dear researchers, I like to follow the microscopic mass balance approach for predicting intestinal absorption. Three dimensionless numbers viz., dose number, absorption number, and dissolution...
02 February 2016 3,840 11 View
Some problems of differential equations could be reduced to fixed points of mappings between Banach spaces of different dimensions, in which case the classical Leray-Schauder degree does not...
30 January 2016 4,159 9 View
Is constant of integration must be real? Suppose the constant of integration is complex then what happened? To next question, please see the file attachment
29 January 2016 850 3 View
Dear all, I have to model three point beam bending test on asphalt concrete beam with geosynthetic interface layer at 2/3rd depth from the top(using abaqus 6.12-3). I have modeled three parts...
28 January 2016 7,742 2 View
I am trying to model polymerization of Polyethylene using PMGM Model. I do not have experience of programming for solving ODEs. The paper I am referring to uses the above-mentioned method to solve...
28 January 2016 762 3 View
Dear RG members, I have a doubt in my derivation of Bessel functions and modified Bessel functions of asymptotic expansions in the limit zero. When I derive the asymptotic expansion of...
27 January 2016 2,047 4 View
Midconvex functions that are not convex are not Lebesgue measurable
23 January 2016 2,992 3 View