Nderiv( - Texas Instruments TI-84 Plus Manual Book

nDeriv(

nDeriv( nDeriv( nDeriv(
(numerical derivative) returns an approximate derivative of
nDeriv(
to , given the
variable
default is 1âL3).
nDeriv(
nDeriv(expression,variable,value
uses the symmetric difference quotient method, which approximates the
nDeriv(
numerical 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.
You can use
nDeriv(
the TI-84 Plus can return a false derivative value at a nondifferentiable point.
Chapter 2: Math, Angle, and Test Operations
at which to calculate the derivative and H (if not specified, the
value
is valid only for real numbers.
H]
[
, )
)
–
once in
expression
. Because of the method used to calculate
with respect
expression
nDeriv(
,
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