EWI

10 Reputation

One Badge

11 years, 313 days

MaplePrimes Activity


These are replies submitted by EWI

@Sergio Parreiras 

Yes, you were right. It needs to be PP, QQ, and OO.

For the revised version (stated below), I get the following error message:

"Error, Got internal error in Typesetting:-Parse : "'_Inert_DELAYLESSEQ' is not a valid inert form"

 

with(RealDomain); solve ({ l-u=0, 

m-v=0, 

n-u=0, 

p-v=0, 

YY+q-u=0, 

YY+r-v=0, 

ZZ+s-u=0, 

ZZ+t-v=0,  

(a-PP*MM)*l=0, 

(b-QQ*MM)*m=0, 

(c-RR*NN)*n=0,  

(d-AA*NN)*p=0, 

(e-TT*OO)*q=0, 

(f-TT*OO)*r=0, 

(i-TT*EE)*s=0, 

(j-TT*EE)*t=0, 

l>=  0, m>= 0, n>= 0, p>=0, q>= 0, r>= 0, s>= 0, t>=0, u>=0, v>=0, a>=0,b>= 0,c>= 0, d>= 0, e>=0, f>= 0, i>=0, j>=0, 

a-PP*MM<= 0,  

b-QQ*MM<= 0,  

c-RR*NN<= 0,     

d-AA*NN<=0,   

e-TT*OO<=0 ,   

f-TT*OO<=0,   

i-TT*EE<= 0, 

j -TT*EE<= 0,  

DD-a-c-e-i=0,  

SS-b-d-f-j=0}, 

{a,b,c,d,e,f,i,j,l,m,n,p,q,r,s,t,u,v });

 

Thank you again!

@Sergio Parreiras 

Sorry, there was a "copy-past-error"...

The following is the revised version, which is still not working.

I would be very happy if you had further suggestions. Thank you very much!

 

with(RealDomain);

solve ({ l-u=0,

m-v=0,

n-u=0,

p-v=0,

YY+q-u=0,

YY+r-v=0,

ZZ+s-u=0,

ZZ+t-v=0,   

(a-P*MM)*l=0,

(b-Q*MM)*m=0,

(c-RR*NN)*n=0,

 (d-AA*NN)*p=0, (e-TT*OO)*q=0,

 (f-TT*O)*r=0,

(i-TT*EE)*s=0,

(j-TT*EE)*t=0,

l>=0, m>=0, n>=0, p>=0, q>=0, r>=0, s>=0, t>=0, u>=0, v>=0, a>=0,b>=0,c>=0, d>=0, e>=0, f>=0, i>=0, j>=0,

a-PP*MM<=0,

b-QQ*MM<=0,

c-RR*NN<=0,    

d-AA*NN<=0, 

e-TT*O<=0 , 

f-TT*O<=0, 

i-TT*EE<=0,

j-TT*EE<=0,

DD-a-c-e-i=0,

SS-b-d-f-j=0},

{a,b,c,d,e,f,i,j,l,m,n,p,q,r,s,t,u,v });

@Sergio Parreiras 

Thank you very much.

First: I changed the symbolic parameters to (DD, EE, MM, NN, OO, PP, QQ, RR, SS, TT, UU, VV, WW, XX, YY, ZZ). 

Second: I changed Solve into solve.

Third: All parameters are real numbers. I only want real solutions.

Fourth: The equality DD-a-c-e-i=0 cannot be removed.

Moreover, there was a mistake, which is now removed: (d-S*N)*p=0 needs to be d-AA*NN)*p=0. 

Could you tell me, why the following is still not working?

with(RealDomain); solve({a >= 0, b >= 0, c >= 0, d >= 0, e >= 0, f >= 0, i >= 0, j >= 0, l >= 0, m >= 0, n >= 0, p >= 0, q >= 0, r >= 0, s >= 0, t >= 0, u >= 0, v >= 0, (a-P*MM)*l = 0, (b-Q*MM)*m = 0, (c-RR*NN)*n = 0, (d-AA*NN)*p = 0, (e-TT*OO)*q = 0, (f-TT*O)*r = 0, (i-TT*EE)*s = 0, (j-TT*EE)*t = 0, l-u = 0, m-v = 0, n-u = 0, p-v = 0, YY+q-u = 0, YY+r-v = 0, ZZ+s-u = 0, ZZ+t-v = 0, DD-a-c-e-i = 0, SS-b-d-f-j = 0, a-PP*MM <= 0, b-QQ*MM <= 0, c-RR*NN <= 0, d-AA*NN <= 0, e-TT*O <= 0, f-TT*O <= 0, i-TT*EE <= 0, j-TT*EE <= 0}, {a, b, c, d, e, f, i, j, l, m, n, p, q, r, s, t, u, v});

 

Thank you very much!!!

Page 1 of 1