Texas Instruments TI-60 Owner's Manual page 19

CHAPTER 1-2
DATA ENTRY KEYS
order directed by the normal algebraic hierarchy Within each set ol
parentheses, the calculator operates according to the rules of the algebraic
hierarchy Use the parentheses it there Is any doubt about how the
calculator will handle an expression
Example : 7 x (3 ♦ 4) -49
Press Display Comments
CBC fQBCl 0 Clear display and pending
operations
7
DL1 CD * ED 4 CD
7 Addition result. muttpUcation
pending
HT1 49 Result
The close parenthesis does not supply a missing number It does, however
complete the operation started with the most recent open parenthesis If no
open parenthesis is pending, the close parenthesis completes all pending
operations
There are limits to how many operations and associated numbers can be
pending As many as fifteen parentheses can be open at any one time and
lour operations can be pending, but only in the most complex situations wilt
these limits be approached
You may see equations or expressions written with parentheses used to
indicate implied multiplication <2 ♦ 1)(3 ♦ 2) - 15 The calculator does not
perform implied multiplications You must enter the multiplication sign
id a do itnanm t go «m ®
Here is an example on using parentheses
Example : Evaluate _T ^ - - 173 9230769
In problems of this type, the calculator must evaluate Ihe entire numerator,
then divide by the entire denominator To be sure that this takes place, add
an extra set of parentheses around the numerator and denominator
Press Display Comments
!C!/£! CC/C 0 Clear display and pending
mm • m ® : CCjLI
17 <8 ♦ 9) displayed
IB r+T-
XI
GB
- 323 The value of the numerator
1
1 -OB