HP 50g HP 50g_user's manual_English_HDPSG49AEM8.pdf - Page 95

Solution to simultaneous equations with MSLV

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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. Page 6-10

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Page 6-10
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.