19.3.4 Tangent to a 2D graph
The
LineTan
command draws tangent lines to graphs.
LineTan
takes two arguments:
expr
, in the variable
x
.
x
0
, a value of
x
.
LineTan(
expr
,
x
0
)
draws the tangent at
x
=
x
0
to the graph of
expr
.
Example
LineTan
(
ln
(
x
),1)
equation
(
LineTan
(
ln
(
x
),1))
y
=(
x
−1)
