f
u
n
c
t
i
o
n
x
e
s
i
n
(
x
)
c
o
s
(
x
)
n
u
m
b
e
r
o
f
t
e
r
m
s
5
x
v
a
l
u
e
1
.
2
a
p
p
r
o
x
i
m
a
t
e
v
a
l
u
e
=
3
.
2
9
4
4
0
0
0
0
e
x
a
c
t
v
a
l
u
e
=
3
.
3
2
0
1
1
6
9
2
t
r
u
n
c
a
t
i
o
n
e
r
r
o
r
=
0
.
0
2
5
7
1
6
9
2