NAME ______________________
Section ______________________
MATH 151
Quiz 6
Week 8
1.
Find the 15th derivative of cos (3 x+5).
2. Let x (t)=5t 2+ √ 2t represent the position of a particle with respect to time t. What is the
acceleration of this particle at time t = ½?
a.
b.
c.
d.
2.25
6
9
9.75
3. At which of these points is the tangent line to the curve defined by y=6 t 4−4 t 3 and x=2 t 2
horizontal?
a. 0.5
b. 1
c. 2
d. none of the above