Use point plotting to graph the plane curve described by the given parametric equations.x = 2 tan t, y = 3 sec t; 0 ? t ? 2?
A. 
B. 
C. 
D. 
Answer: A
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = 
i + 
j + 4tk
A. T = 
(cos 0.75t)i - 
(sin 0.75t)j ; N = (-sin 0.75t)i - (cos 0.75t)j
B. T = 
(sin 0.75t)i - 
(cos 0.75t)j ; N = (-sin 0.75t)i - (cos 0.75t)j
C. T = 
(cos 0.75t)i - 
(sin 0.75t)j + 
k ; N = (-sin 0.75t)i - (cos 0.75t)j
D. T = 
(cos 0.75t)i - 
(sin 0.75t)j + 
k ; N = (-sin 0.75t)i - (cos 0.75t)j
Provide an appropriate response.Starting at middle C with a frequency of 260 cps, find the frequency of the note a an octave and a fourth above middle C.
A. 676 B. 716 C. 689 D. 694
Add or subtract vertically.Subtract -x3y3 + x2y2 - x2y - 4x + 4 from 7x3y3 + 6x2y2 - x2y + xy2 + 4x + 2.
A. 8x3y3 + 7x2y2 - 2x2y + xy2 + 6 B. 8x3y3 + 7x2y2 + x2y + 8x - 2 C. 8x3y3 + 5x2y2 + 2xy2 - 2 D. 8x3y3 + 5x2y2 + xy2 + 8x - 2
Solve the equation.6y2 + 17y + 12 = 0
A. y = 
, 
B. y = - 
, - 
C. y = 
, - 
D. y = - 
, - 