d
d
x
sin
2
(
x
)
=
2 sin(
x
) cos(
x
)
(1)
d
d
x
cos
2
(
x
)
=
- 2 cos(
x
) sin(
x
)
(2)
File translated from T
E
X by
T
T
H
, version 1.55.