1-18 Operating the TI-83
8301OPER.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:09 PM Printed: 02/19/01 1:34
PM Page 18 of 24
When an expression is evaluated successfully from the
home screen or from a program, the TI.83 stores the
answer to a storage area called Ans (last answer). Ans may
be a real or complex number, a list, a matrix, or a string.
When you turn off the TI.83, the value in Ans is retained in
memory.
You can use the variable Ans to represent the last answer in
most places. Press y [ANS] to copy the variable name Ans
to the cursor location. When the expression is evaluated, the
TI.83 uses the value of Ans in the calculation.
Calculate the area of a garden plot 1.7 meters by 4.2 meters.
Then calculate the yield per square meter if the plot produces a
total of 147 tomatoes.
1 Ë 7 ¯ 4 Ë 2
Í
147 ¥ y [ANS]
Í
You can use Ans as the first entry in the next expression
without entering the value again or pressing y [ANS]. On
a blank line on the home screen, enter the function. The
TI.83 pastes the variable name Ans to the screen, then the
function.
5 ¥ 2
Í
¯ 9 Ë 9
Í
To store an answer, store Ans to a variable before you
evaluate another expression.
Calculate the area of a circle of radius 5 meters. Next, calculate
the volume of a cylinder of radius 5 meters and height 3.3 meters,
and then store the result in the variable V.
y [p] 5 ¡
Í
¯ 3 Ë 3
Í
¿ ƒ V
Í
Ans (Last Answer) Storage Area
Using Ans in an
Expression
Continuing an
Expression
Storing Answers