Parametric to Differential
- To: mathgroup at yoda.physics.unc.edu
- Subject: Parametric to Differential
- From: "ALDO-PIER SOLARI" <G321964 at cicei.ulpgc.es>
- Date: Sun, 2 Jan 1994 03:12:50 GMT
I would need some help regardin the following task:
I have developed a highly complex model (fish pop. dynamics).
There are 2 parametric equations which I would Mathematica to crunch
into a differential equation.
What functions do I have to use in Mathematica to carry on the
operation ?
The equations are of the type:
F1(x) = (b-c/2)+(((cos(2*pi/tp*8x-i)^[2*ceil(rnd(m))-1])-1)+ ...
F2(x) = ((-(h*m*pi)/2*tp))*((cos(2*pi/tp*8x-i)))^[2*ceil(rnd(m-2))-
1]) ...
F1(x) against x describes stock in time;
F2(x) against x describes the recruitment rate in time;
F2(x) as dependent (y axis) against F1(x) dexcribes the state space.
Please, refer even to pp in the manuals.
Any help shall be welcome.
Regards, Aldo-Pier.
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(*) Aldo-Pier Solari [MSc, PhD cand.],
Fisheries Research Group,
University of Las Palmas [ULP], Box 50,
35017 LAS PALMAS - CANARY ISLANDS [Spain]
International: <SOLARIS at OBERON.ULPGC.ES>,
<SOLARIS at EDI.ULPGC.ES>;
Local: <G321964 at CICEI.ULPGC.ES>;
fax: <34 (28) 45 29 22>.
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