Compute the unit binormal vector and torsion of the curve. r(t) = 
A. B(t) = 
, ? = 1
B. B(t) = 
, ? = 0
C. B(t) = 
, ? = 1
D. B(t) = 
, ? = 0
Answer: D
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Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x - 2| ? 0.2, |y - 1| ? 0.2
A. |E| ? 9.12384 B. |E| ? 16.72704 C. |E| ? 12.92544 D. |E| ? 13.10328
Fill in the blank with one of the words or phrases listed below. 
An algebraic expression is 
when all like terms have been 
.
A. simplified; constant B. simplified; combined C. constant; simplified D. combined; simplified
Provide an appropriate response.In testing an experimental diet for horses, it was determined that the (average) live weight w (in kilograms) of a horse was statistically a linear function of the number of days d after the diet was started where 0 ? d ? 300. The weight of a horse starting the diet was 170 kg and 120 days later it was 362 kg. Determine w as a linear function of d and find the average weight of a horse when d = 250.
What will be an ideal response?
Solve the system. 3x + 2y = -4 4x = -16
A. {(-4, 4)} B. {(4, -4)} C. ? D. {(-4, -4)}