Hello,
Here is the solution for th FX-991ES.
Hello,
The error may be due to the key you used to signifie
inverse. It says in the manual that you should use the key x^-1 not the
one used to input general powers.
Here is screen capture from the
Appendix to the manual. The picture shows the sequence of keys to press
to obtain the inverse of a 2x2 matrix. It is taken from page 41 of
Appendix
The matrix used in the exemple is
a_11=2 a_12=1 a_21=1 a_22=2
Here is the link to download the manual and the appendix
http://support.casio.com/manualfile.php?rgn=1&cid=004001004The link is for FX991ES. Look there foe you manual.
Hope it helps
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