Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function decreases most rapidly.
A. -
B. -
C. -
D. -3
Answer: A
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Simplify the expression.
a. -128n14
b. -64n18
c. -64n14
d. -128n18
e. -32n14
The graph of a one-to-one function f is given. Sketch the graph of the inverse function f-1, on the same set of axes. Use a dashed line for the inverse.
A. 
B. 
C. 
D. 
Write the equation of the circle graphed below. Express the equation in standard form.
?
What will be an ideal response?
Solve the problem.Suppose there are two low-frequency sound waves with similar frequencies. Let 
and 
model the two tones where t is time measured in seconds. Write the sum 
as a product of two trigonometric functions, and determine the frequency of the beats.
A. 3 beats per second 0.004 cos (93?t) cos (3?t) B. 1.5 beats per second 0.004 cos (46.5?t) cos(1.5?t) C. no beats 0.004 cos (46.5?t) cos (46.5?t) D. no beats 0.004 cos (93?t) cos (93?t)