Problem on solving equation with complex number on HP 50G

[Oia]

When I try to solve the following equation  : A=X*e^(pi*126.4*i/180) using "Solve Equation..." under "NUM.SLV" menu, the HP 50g keeps poping up errors.

By giving an integer X=3 (or whatever number I key in), I want to solve for "A". However, the calculator keeps showing "BAD Guess(es)" I'm pretty sure that I've already have my "complex flag" checked. 

Is there anything I did wrong, or any setup that needs to be made before solving this kind of equation?

Big thanks in advance!!!

[HP-MACH]

Hi!, Oia:

See, your example ...

  Try with Approx. mode and EVAL ...

Now, with Wolfram Alpha ...

[Vlad_AB]

Hi!

You can't use NUM.SLV with complex number: /t5/Calculators/HP-50g-Numeric-solver-with-complex-numbers/td-p/705958#.Und5OXDxrIx (the same question).

To solve your equation with the complex number (coefficients and/or roots) you may use the MSLV command.

Example #1. Solve 'A=X*e^(pi*126.4*i/180)' with 'X=3'.

Put next objects in the stack:

[ 'A=3*e^(pi*126.4*i/180)' ] Equation

[ 'A' ] Variable to solve

[ (1.,1.) ] Initial complex value for root finding.

Type the command MSLV.

Press ENTER.

You'll get the answer [ (-1.78025665981, 2,41468139207) ].

 

Example #2. Solve 'ACOS(X+i)=COS(X)*i'.

[ 'ACOS(X+i)=COS(X)*i' ]

[ 'X' ]

[ (1., 1.) ]

MSLV (Press ENTER)

You'll get the answer [ (2.74431603951, 1.40084910913) ].