Casio fx-CG50 Manuale di istruzioni - Pagina 6

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Casio fx-CG50 Manuale di istruzioni
Input the value
5
and press the
Taking it further – checking your algebra with True/False
You can check work by testing True/False for two expressions you hope are equivalent.
Check work on algebraic fractions (simplifying, adding, writing as partial fractions, changing improper to
mixed). For example, to check whether
using the
l
Press
and the calculator will give 0 if false and 1 for true for the current value of
Hint: BEFORE USING THIS, make sure that you define
equal 0, it will tell you that
To set the value for
that is useful for the identity or equation that you are checking, type the value you
x
want to use for
, then press
x
Taking it further – explore the other menus in OPTN
d
Press
to go back through the menus to the top or to make other choices on menus that you have
already seen. It's worth taking some time to familiarise yourself with them so that you are not searching
when using the calculator in earnest!
- 6 -
l
key to execute.
f
L
key for
x
and
is TRUE (clearly not true for all real values of
.
b
f
l
,
,
This will assign that value to
simplifies to
, input
.
-
for the equals sign.
as an appropriate value. For example, if
x
x
x.
is set to
x
x
)!
.