Solve and check.
- 
= 0
A. 
B. 
C. 
D. 
Answer: A
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Find T, N, and B for the given space curve.r(t) = 
i + 
j + 4tk
A. T = 
(sin 3t)i - 
(cos 3t)j ; N = (-sin 3t)i - (cos 3t)j ; B = 
(cos 3t)i - 
(sin 3t)j - 
k
B. T = 
(cos 3t)i - 
(sin 3t)j ; N = (-sin 3t)i - (cos 3t)j ; B = 
(cos 3t)i - 
(sin 3t)j - 
k
C. T = 
(cos 3t)i - 
(sin 3t)j + 
k ; N = (-sin 3t)i - (cos 3t)j ; B = - 
k
D. T = 
(cos 3t)i - 
(sin 3t)j + 
k ; N = (-sin 3t)i - (cos 3t)j ; B = 
(cos 3t)i - 
(sin 3t)j - 
k
Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (2, 1) for ln x + xy2 + ln y = 0.
A. 1
B. 
C. -1
D. - 
Write the word phrase as an algebraic expression. Use x to represent the unknown number.The quotient of 35 and a number
A. 
B. x - 35
C. 
D. 35 - x
Find the measure of the dihedral angle indicated.The figure shown is a right prism whose bases are regular octagons. Find the measure of the dihedral angle between adjacent lateral faces.
A. 135° B. 120° C. 90° D. 45°