Advanced Search

Question: allsolutions of an equation with parameters

Question:allsolutions of an equation with parameters

lham 20 Maple
parameters
June 20 2015
1

guys, i have this equation which a, n, c, phi[0] are parameters and r is variable. maple solved this equation with n=0,c=c,phi[0]=5/4-1/4 c but i obtained another solution for this equation : a = 1, c = 5, n = 1, phi[0] = 1 ( you can check). 

 

> 

restart
> 

odesys := {5*r^a+4*n-c*r^n-4*phi[0]}

{5*r^a+4*n-c*r^n-4*phi[0]}

 (1)
> 

res := op(odesys);

5*r^a+4*n-c*r^n-4*phi[0]

 (2)
> 

 
> 

SOL := solve(identity(res = 0, r), [a, n, c, phi[0]]);

[[a = 0, n = 0, c = c, phi[0] = 5/4-(1/4)*c]]

 (3)
> 

NULL
> 

eval(5*r^a+4*n-c*r^n-4*phi[0], [a = 1, c = 5, n = 1, phi[0] = 1])

0

 (4)
> 

NULL


how can i get all solutions for a equation like this ?

Download eq000.mw
Please Wait...