Find the length of the indicated portion of the trajectory.r(t) = (etcos t)i + (etsin t)j + 7etk, -ln 2 ? t ? 0
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve by substitution and check.x - 2y = -2 y = 3
A. (-8, -3) B. (4, 3) C. (3, 4) D. (-8, 3)
Mathematics
Find the indicated limit.
?
?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Simplify. Do not use negative exponents in your answer.(x-8y10z3)(x-3y-3z6)
A. 
B. x5y7z9
C. 
D. 
Mathematics
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 
- 9
A. f-1(x) = x3 + 9
B. f-1(x) = (x + 9)3
C. f-1(x) = 
+ 9
D. f-1(x) = (x - 9)3
Mathematics