01-06-2018, 07:14 PM

Hi,

Here is an example of a system equations...

degree mode is on...

Unknowns are R, S and Q

So in fact the 1rst eq give R and then we have S and Q with E2 and E3

If I check only E2 and E3 The solutions for S and Q are OK:

But if I try to solve the three equations in a single system (E1, E2 and E3 are check) and with the num view complete like these:

The solve app change T and P !!! But T and P are not checked !! ? as you can see :

R solution is OK but S and Q are not !!!

The approx solutions are:

R=-88 ; S=1383 and Q=-31

Any help are welcome...

I do not understand what I'm doing wrong...

Here is an example of a system equations...

degree mode is on...

Code:

E1: R+T-P*SIN(-15)=0

E2: S-Q+P*COS(15)=0

E3: -A*T+P*(D*SIN(-15)-C*COS(15))+B*Q=0

Unknowns are R, S and Q

So in fact the 1rst eq give R and then we have S and Q with E2 and E3

Code:

A:=2.62

B:=25.88

C:=0.97

D:=1.84

T:=450

P:=-1400

If I check only E2 and E3 The solutions for S and Q are OK:

But if I try to solve the three equations in a single system (E1, E2 and E3 are check) and with the num view complete like these:

The solve app change T and P !!! But T and P are not checked !! ? as you can see :

R solution is OK but S and Q are not !!!

The approx solutions are:

R=-88 ; S=1383 and Q=-31

Any help are welcome...

I do not understand what I'm doing wrong...