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The equation we stored in variable EQ is already loaded in the Eq field in
the SOLVE EQUATION input form. Also, a field labeled x is provided. To
solve the equation all you need to do is highlight the field in front of X: by
using
˜, and press @SOLVE@. The solution shown is X: 4.5006E-2:
This, however, is not the only possible solution for this equation. To obtain
a negative solution, for example, enter a negative number in the X: field
before solving the equation. Try
3\ @@@OK@@ ˜ @SOLVE@. The solution is
now X: -3.045.
Solution to simultaneous equations with MSLV
Function MSLV is available in the ‚Ï menu. The help-facility entry for
function MSLV is shown next:
Notice that function MSLV requires three arguments:
1. A vector containing the equations, i.e., ‘[SIN(X)+Y,X+SIN(Y)=1]’
2. A vector containing the variables to solve for, i.e., ‘[X,Y]’
3. A vector containing initial values for the solution, i.e., the initial values
of both X and Y are zero for this example.
SG49A.book Page 10 Friday, September 16, 2005 1:31 PM