Created by T. Madas
Question 1
Differentiate the following expressions with respect to x
a) y = 4 x − 3 x
dy
−2
−1
= 2x 2 − 1 x 3
3
dx
b) y = 2 x − 4 x3
1
dy
−1
= x 2 − 6x 2
dx
c) y =
1
2 x
+
d) y = x x −
e) y = 4 x +
4
x2
1
x2
1
4 x
dy
−3
= − 1 x 2 − 8 x −3
4
dx
dy 3 12
= x + 2 x −3
dx 2
dy
−1
−3
= 2x 2 − 1 x 2
8
dx
Created by T. Madas
Created by T. Madas
Question 2
Find f ′ ( x ) for each of the following functions.
a)
f ( x) =
2
x
3
2
3
b) f ( x ) = 8 x 4 −
c)
f ( x) = 2x −
2
x
3
x
d) f ( x ) = 3 x 2 −
e)
f ′ ( x ) = −6 x −4 + 10 x
3
+ 5x 3
f ( x ) = x3 −
2
− 14
− 13
+ 8 x −5
4
f ′( x ) = 6x
+4 x +2
f ′ ( x ) = 2 + 6 x −3 + 2 x
3
3
−
f ′ ( x ) = 2 x 3 + 9 x −4
3
2
2
f ′ ( x ) = 3 x 2 + x −3
2
1
2x
1
1
2x
Created by T. Madas
− 12
Created by T. Madas
Question 3
Differentiate the following expressions with respect to x
a) y =
b) y =
c) y =
4
x
3
−
3
4x2
4
3x
−
dy 8 −3
= x − 12 x −4
dx 3
2
dy
−7
= 30 x 2 − 3 x −3
2
dx
12
x2 x
1 2 x3 + 1
+
3x
3 x
(
d) y = 2 x 7 x − x 2
(
e) y = 3 + 2 x
)
2
3
dy
−3
= − 1 x −2 + 5 x 2 − 1 x 2
3
3
6
dx
)
3
1
dy
= 21x 2 − 5 x 2
dx
dy
−1
= 6x 2 + 4
dx
Created by T. Madas