Quiz #4 (2.3, 2,4, & 2.5)
Classlb:
Math 1210
-
Name:
008 Fall 2012
Instructions:
-
September 18, 2012
Score
Instructor: Katrina Johnson
all of your work as partial credit will be
and there may be NO credit given for problems without
supporting work All answers should be completely simplified. unless otherwise
stated. You may NOT use a calculator. You may use a 3x5 index card.
Complete each problem. Show
given where appropriate,
(14 pts) 1. Find the derivative of the following functions,
7 + 5x
4 + lOx
a) y = —4x
2 x —3
*
+2oy
b) f(x)
=
3
3x
_::x
-2
(bo NOT bother simplifying.)
f(x)=
c) y
=
3
(5x
+
)(2x
2
4x
3
—
tan x) (bo NOT bother simplifying.)
dy
(6 pts) 2. Show that D
(cotx)
1
=
x
2
—csc
—
H
-f
3
5
0
0
-I.
0
—1
z
0
0
I
H