fx-9860GII
d²/dx²
On a Casio calculator you can calculate quadratic differentials
MATH d²/dx² F4 F5
or as
CALC d²/dx² OPTN F4 F3
or via the CATALOG as
CATALOG P
INPUT SHIFT 4 d²/dx²( F1
You can interrupt an ongoing calculation by pressing AC/ON .
Explanation
The syntax for the quadratic differential command is
d²dx²( f (x), a, tol )
where
f (x) Expression a Differential coefficient point tol Tolerance
For SET UP Input/Output Line you get
d²/dx² ≣ d²/dx²(
and for SET UP Input/Output Math the tolerance value is fixed at 1E−10 and cannot be changed
d²/dx² ≣ |x=▯
Example 1
To determine the quadratic differential coefficient for the function x3 + 4x2 + x − 6
d²/dx² ≣ X,θ,T ∧ 3 + 4 X,θ,T x² + X,θ,T − 6 ٬
at the point x = 3
3 ٬
with a tolerance of 1E−5
1 EXP (–) 5 ) EXE
which gives
d²/dx²(X^3+4X²+X−6,3,
1E-5)26