Find the curvature of the space curve.r(t) = -4i + (t + 10)j +(ln(cos t) + 1)k
A. ? = sin t
B. ? = cos t
C. ? = sec t
D. ? = csc t
Answer: B
Mathematics
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Find the least common multiple for the set of numbers.120, 270
A. 30 B. 2160 C. 1080 D. 3240
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Use Cramer's rule to solve the system or to determine that the system is inconsistent or contains dependent equations.
A. dependent equations; infinitely many solutions B. {(-3, 2)} C. {(2, -3)} D. inconsistent; no solution or ?
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Evaluate the expression.
- 
A. 720 B. 0 C. 362,880 D. 6
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Add or subtract as indicated.(x3y2 + 3x2y3 + 4xy - 3) + (x2y3 + 7x3y2 + 5xy + 1)
A. 8x3y2 + 4x2y3 + 4xy - 2 B. 6x3y2 + 4x2y3 + 9xy - 2 C. 8x3y2 + 4x2y3 + 9xy - 2 D. 2x3y2 + 10x2y3 + 9xy - 2
Mathematics