For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (4t sin t + 4 cos t)i + (4t cos t - 4 sin t)j + 8k; normal plane at t = 5.5?.
A. x - y + z = -4
B. y = -4
C. x + y + z = -4
D. y = 4
Answer: B
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Choose the equation that matches the graph.
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
+ 
= 1
Solve the problem.The charge q (in coulombs) delivered by a current i (in amperes) is given by 
where t is the time (in seconds). A damped-out periodic wave form has current given by 
Find a formula for the charge delivered over time t.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Write an equation for the graph given. The graph represents an logarithmic function f with base 2 or 3, translated and/or reflected.
A. -log3(x - 2) B. log3(-x - 2) C. -log3(-x + 2) D. -log3(x + 2)
Find f(x) and g(x) such that h(x) = (f ? g)(x). Answers may vary.h(x) = 
A. f(x) = 
, g(x) = 7x + 2
B. f(x) = 
, g(x) = x + 2
C. f(x) = 7x, g(x) = 
D. f(x) = 7x + 2, g(x) = 