Texas Instruments TI-83 Manual Book page 79

The default guess is calculated as
4. Edit
bound={ lower , upper }
the TI-83 Plus
find the solution more quickly. The default is
5. Move the cursor to the variable for which you want to solve and press
ƒ \ (above the Í key).
The solution is displayed next to the variable for which you solved.
A solid square in the first column marks the variable for which you
solved and indicates that the equation is balanced. An ellipsis
shows that the value continues beyond the screen.
Note: When a number continues beyond the screen, be sure to press ~
to scroll to the end of the number to see whether it ends with a negative
or positive exponent. A very small number may appear to be a large
number until you scroll right to see the exponent.
The values of the variables are updated in memory.
TI-83 Plus Math, Angle, and Test Operations
.
lower
searches for a solution. This is optional, but it may help
(upper+lower)
2
and are the bounds between which
upper
bound={L1
.
99,1 99}
å å
.
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