Find the unit tangent vector of the given curve.r(t) = 4t6i - 3t6j + 12t6k
A. T = 
i - 
j - 
k
B. T = 
i - 
j + 
k
C. T = 
i - 
j + 
k
D. T = 
i + 
j + 
k
Answer: C
Mathematics
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Evaluate the integral by making a substitution and then using a table of integrals.
A. ln 
+ cos t + C
B. ln 
- sin t + C
C. ln 
+ sin t + C
D. ln 
- sin t + C
Mathematics
Use the cofunction identities to find an angle ? that makes the statement true.tan (2? - 140°) = cot (? + 5°)
A. ? = 6° B. ? = 75° C. ? = 10° D. ? = 16°
Mathematics
You are given 
and a tolerance ?. Find a number ? such that | f(x) – L |
Mathematics
Solve. Remember to insert units when writing your answer.How many gallons of punch have been prepared if 10 pt 1 c of fruit juice is mixed with 
of ginger ale? Give your answer as a mixed number.
A. 2
gal
B. 1
gal
C. 2
gal
D. 5
gal
Mathematics