WOLFRAM
|
DEMONSTRATIONS PROJECT
T
a
n
g
e
n
t
t
o
a
C
u
r
v
e
x
0
a
b
c
S
h
o
w
t
h
e
t
a
n
g
e
n
t
l
i
n
e
a
t
x
=
x
0
t
o
t
h
e
c
u
r
v
e
a
3
x
+
b
2
x
+
c
x
.