Texas Instruments TI-86 - Manual (Page 370)

358
Chapter 20: A to Z Function and Instruction Reference
20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 358 of 118
SinR [ iterations ,] equationVariable
Uses xStat and yStat for xList and yList, respectively.
These built-in variables must contain valid data of the
same dimension; otherwise, an error occurs. The
regression equation is stored to equationVariable and
RegEq .
SinR [ iterations ]
Uses xStat and yStat , and stores the regression equation
to RegEq only.
SlpFld
† graph format screen
(scroll down to
second screen)
SlpFld
In DifEq graphing mode, turns on slope fields. To turn
off direction and slope fields, use FldOff .
Solver(
† - t
Solver( equation , variable , guess ,{ lower , upper })
Solves equation for variable, given an initial guess and
lower
and upper bounds within which the solution is
sought. equation can be an expression, which is
assumed to equal 0.
Solver( equation , variable , guess )
Uses L1 E 99 and 1 E 99 for upper and lower, respectively.
If y=5, solve x 3 +y 2 =125 for x. You guess the
solution is approximately 4:
5¶y b 5
Solver(x^3+y 2 =125,x,4) b Done
x b 4.64158883361
Solver( equation , variable ,{ guessLower , guessUpper })
Uses the secant line between guessLower and
guessUpper
to start the search. Solver( will still search
for a solution outside of this range.