Texas TI-86 用户手册
54
Chapter 3: Math, Calculus, and Test Operations
03MATH.DOC TI-86, Chap 3, US English Bob Fedorisko Revised: 02/13/01 2:19 PM Printed: 02/13/01 3:00 PM Page 54 of 10
03MATH.DOC TI-86, Chap 3, US English Bob Fedorisko Revised: 02/13/01 2:19 PM Printed: 02/13/01 3:00 PM Page 54 of 10
03MATH.DOC TI-86, Chap 3, US English Bob Fedorisko Revised: 02/13/01 2:19 PM Printed: 02/13/01 3:00 PM Page 54 of 10
The CALC (Calculus) Menu
- †
evalF
nDer
der1
der2
fnInt
4
fMin
fMax
arc
The calculus functions return values with respect to any user-created variable, to built-in
variables
variables
eqn
and
exp
, and to graphing variables such as
x
,
t
, and
q
.
evalF(
expression
,
variable
,
value
)
Returns the value of expression with respect to variable for a
given variable value
given variable value
nDer(
expression
,
variable
ã
,
value
ä
)
Returns an approximate numerical derivative of expression with
respect to variable for the current variable value or specified
variable value
respect to variable for the current variable value or specified
variable value
der1(
expression
,
variable
ã
,
value
ä
)
Returns the value of the first derivative of expression with respect to
variable
variable
for the current variable value or specified variable value
der2(
expression
,
variable
ã
,
value
ä
)
Returns the value of the second derivative of expression with respect
to variable for the current variable value or specified variable value
to variable for the current variable value or specified variable value
fnInt(
expression
,
variable
,
lower
,
upper
)
Returns the numerical integral of expression with respect to variable
between lower and upper boundaries
between lower and upper boundaries
fMin(
expression
,
variable
,
lower
,
upper
)
Returns the minimum value of expression with respect to variable
between lower and upper boundaries
between lower and upper boundaries
fMax(
expression
,
variable
,
lower
,
upper
)
Returns the maximum value of expression with respect to variable
between lower and upper boundaries
between lower and upper boundaries
arc(
expression
,
variable
,
start
,
end
)
Returns the length of a segment of a curve defined by expression
with respect to variable between start and end
with respect to variable between start and end
You must set
Dec
mode to
use the calculus functions.
For
evalF
,
nDer
,
der1
, and
der2
,
variable
can be a real
or complex number or list.
You can use
der1
and
der2
in
expression
. You can use
nDer
once in
expression
.
For
fnInt
,
fMin
, and
fMax
,
lower
<
upper
must be true.