Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 48

MathPrint™:
Classic:
nDeriv(expression,variable,value
uses the symmetric difference quotient method, which approximates the numerical
nDeriv(
derivative value as the slope of the secant line through these points.
( ε ) f x ε ( )
f x + – –
f' x ( )
= ----------------------------------------- -
2ε
As H becomes smaller, the approximation usually becomes more accurate. In MathPrint™ mode,
EM
the default H is 1 3. You can switch to Classic mode to change H for investigations.
MathPrint™
Classic
You can use once in
nDeriv(
Plus can return a false derivative value at a nondifferentiable point.
fnInt(
(function integral) returns the numerical integral (Gauss-Kronrod method) of
fnInt(
respect to , given
variable
is valid only for real numbers.
fnInt(
MathPrint™:
Classic:
fnInt(expression,variable,lower,upper
In MathPrint™ mode, the default H is 1
investigations.
[
, H] )
. Because of the method used to calculate
expression
limit, limit, and a
lower upper
[
,tolerance
EM 3. You can switch to Classic mode to change H for
Chapter 2: Math, Angle, and Test Operations
(if not specified, the default is 1âL5).
tolerance
]
)
, the TI-84
nDeriv(
with
expression
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