Page 7-4
To solve for
P
i
and
P
o
, use the command SOLVE from the S.SLV menu
(
„Î
), it may take the calculator a minute to produce the result:
{[‘Pi=-(((
σθ
-
σ
r)*r^2-(
σθ
+
σ
r
)*a^2)/(2*a^2))’
‘Po=-(((
σθ
-
σ
r)*r^2-(
σθ
+
σ
r
)*b^2)/(2*b^2))’ ] }
, i.e.,
Notice that the result includes a vector [ ] contained within a list { }. To remove
the list symbol, use
µ
. Finally, to decompose the vector, use function OBJ
.
The result is:
These two examples constitute systems of linear equations that can be handled
equally well with function LINSOLVE (see Chapter 11). The following
example shows function SOLVE applied to a system of polynomial equations.
Example 3 - System of polynomial equations
The following screen shot shows the solution of the system X
2
+XY=10, X
2
-Y
2
=-5,
using function SOLVE:
Solution to simultaneous equations with MSLV
Function MSLV is available as the last option in the
‚Ï
menu:
The help-facility entry for function MSLV is shown next:
