Hello,

I have the following differential equation system to solve, the variables I wish to obtain being A, B, C, D, E, I, G and H.

    0 = -dA + dB + 2*dC - 2*r1 - 2*r5
    0 = dA + dD + r1 + r4
    0 = K2 - C/B^2
    0 = K3 - D/(A*B)

    0 = r5 + 2*r4 - dE
    0 = r5 -dI
    0 = -r5 - r4 - dG
    0 = -r1/2 - dH

r1, r4 and r5 are variables expressed as functions of A, B, C, D, I, G and H, calculated previously in the integrated function. K2 and K3 are parameters.

As I have two algebraic equations, I think this system is a DAE (Algebraic differential equation). I found in the package deSolve two functions that resolve DAE but I didn't manage to obtain a solution; it says that the variable dA cannot be found.

Does anyone know how to solve this problem?

Thank you

Raphaëlle Carraud


Raphaëlle Carraud

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