Texas Instruments TI-89 Manuale Utente
Symbolic Manipulation
245
Products and sums involving undefined variables are sorted according to the first letter
of the variable name.
of the variable name.
-
Undefined variables r through z are assumed to be true variables, and are
placed in alphabetical order at the beginning of a sum.
placed in alphabetical order at the beginning of a sum.
-
Undefined variables a through q are assumed to represent constants, and are
placed in alphabetical order at the end of a sum (but before numbers).
placed in alphabetical order at the end of a sum (but before numbers).
•
Numeric subexpressions are combined.
•
Products and sums are sorted into order.
•
Similar factors and similar terms are
collected.
collected.
•
Identities involving zeros and ones are
exploited.
exploited.
This floating-point number causes numeric
results to be shown as floating-point.
results to be shown as floating-point.
If a floating-point whole number is entered as
an exponent, it is treated as an integer (and
does not produce a floating-point result).
an exponent, it is treated as an integer (and
does not produce a floating-point result).