Function tables

14.1Make a table of values#

Press MENU then 9. A form asks for f(x), Start, End and Step. Type the function with ALPHAx) for x and press =. The start, end and step already show 1, 5 and 1; press = to accept or type new values. The table holds up to 45 rows.

Example 14.1

Squares from 1 to 5

1. Open Table, type x², and accept the range.

   MENU9ALPHAx)x²====

Example 14.2

A table in half steps

1. f(x) = x, start 0, end 2, step 0.5.

   MENU9ALPHAx)=0=2=0.5=

Use ▲ and ▼ to move through the rows; the value of f(x) for the selected row shows at the bottom. Press AC to go back to the form and change the function or range.

Example 14.3

Read a selected row

1. Squares table, then go down two rows.

   MENU9ALPHAx)x²====▼▼

Example 14.4

Back to the setup form

1. Press AC from the table.

   MENU9ALPHAx)x²====AC

14.2When the table does not appear#

• A step of 0, or an end value that is before the start with a positive step, gives a Math ERROR.
• More than 45 rows gives a Memory ERROR; widen the step or shorten the range.
• A row where the function is not defined (for example 1÷x at 0) shows ERROR for that row only.

Example 14.5

Too many rows

1. Step 1 from 1 to 500.

   MENU9ALPHAx)=1=500=1=