Find all specified roots.Seventh roots of 1.

A. 1, cis , cis , cis , cis , cis , cis 
B. -1, cis , cis , cis , cis , cis , cis 
C. 1, cis , cis , cis , cis , cis , cis 
D. 1, cis , cis , cis , cis , cis , cis , -1

Answer: C

Mathematics

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Find a formula for the nth term of the sequence.0, 0, 2, 2, 0, 0, 2, 2 (alternating 0's and 2's in pairs)

A. an = 1 + (-1)n(n + 1)/2 B. an = 1 + (-1)n(n+1) C. an = 1 - (-1)n(n-1) D. an = 1 + (-1)n(n-1)

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Mathematics

Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 3x3 - 2

A. f-1(x) = 
B. f-1(x) =   + 2 
C. Not one-to-one
D. f-1(x) = 

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Perform the indicated operation. Simplify if possible. + 

A.
B.
C. 5
D. 0

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Mathematics

Solve the compound inequality. Graph the solution set.f(x) ? 6 or f(x) ? 14, where f(x) = 4x - 2

A.

B.

C.

D.

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Mathematics