Evaluate the sum.
3k
A. 12
B. 84
C. -84
D. -12
Answer: A
Mathematics
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Let C be a smooth curve defined by r(t) = 7i+tj+4tk, and let T(t) and N(t0 be the unit tangent vector and unit normal vector to C corresponding to t. The plane determined by T and N is called the osculating plane. Find an equation of the osculating plane of the curve described by r(t) at t =1.
What will be an ideal response?
Mathematics
Find an equation in slope-intercept form (where possible) for the line.Through (-13, -1), m = 2
A. y = 2x - 1 B. y = -2x - 25 C. y = -2x - 11 D. y = 2x + 25
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 72x(x + 2)
Mathematics
Solve. Express any nonreal complex numbers with i notation.3x4 = 38x2 + 160
A. x = ± 
, x = ± 4
B. x = ± 
C. x =± 
, ± 4
D. x = ± 4
Mathematics