90
Alphabetical Listing
integral
See
∫
()
,
interpolate ()
Catalog >
interpolate(
xValue
,
xList
,
yList
,
yPrimeList
)
⇒
list
This function does the following:
Given
xList
,
yList
=
f(
xList
)
, and
yPrimeList
=
f'(
xList
)
for some unknown
function
f
, a cubic interpolant is used to
approximate the function
f
at
xValue
. It is
assumed that
xList
is a list of
monotonically increasing or decreasing
numbers, but this function may return a
value even when it is not. This function
walks through
xList
looking for an interval
[
xList
[i],
xList
[i+1]] that contains
xValue
.
If it finds such an interval, it returns an
interpolated value for
f(
xValue
)
; otherwise,
it returns
undef.
xList
,
yList
, and
yPrimeList
must be of
equal dimension
≥
2 and contain
expressions that simplify to numbers.
xValue
can be an undefined variable, a
number, or a list of numbers.
Differential equation:
y
'=-3
•
y
+6
•
t
+5 and
y
(0)=5
To see the entire result, press
£
and then
use
¡
and
¢
to move the cursor.
Use the interpolate() function to calculate the
function values for the xvaluelist:
inv
χ
2
()
Catalog >
inv
χ
2
(
Area
,
df
)
invChi2(
Area
,
df
)
Computes the Inverse cumulative
χ
2
(chi-
square) probability function specified by
degree of freedom,
df
for a given
Area
under the curve.
inv
F
()
Catalog >
inv
F
(
Area
,
dfNumer
,
dfDenom
)
invF(
Area
,
dfNumer
,
dfDenom
)
Содержание TI-Nspire CAS
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