fx-9860GII
SolvN
On a Casio calculator you can solve an f (x) function using numerical analysis
CALC SolvN OPTN F4 F5
or via the catalog as
CATALOG P
INPUT SHIFT 4 SolveN( F1
The result depends on the specified SET UP Display format. You can use the command any time in the RUN·MAT, STAT, TABLE, EQUA and PRGM modes.
Explanation
The syntax for the solveN command is
SolveN(left side [=right side] [,variable] [lower limit, upper limit])
where
left side [=right side] Expression to be solved
When right side is omitted, the solution is performed using right side = 0.[variable] Variable A∼Z, r, θ
Omitting a variable in the expression causes X to be used.[lower limit, upper limit] Range of the solution
You can input a value or an expression as the range.
Example 1
To solve x2 − 5x − 6 = (x + 1)(x − 6) = 0
SolvN
WARNING! More solutions
may exist.Press:[EXIT] ≣ X,θ,T x² − 5 X,θ,T − 6 ) EXE EXIT
For SET UP Input/Output Math the solutions x = − 1 and x = 6 are shown as
AnS 1 -1 2 6 -1
and for SET UP Input/Output Line as
SolveN(X2−5X−6) {-1,6}