Evaluate the derivative.f(t) = 7 tanh-1 

A.
B.
C.
D.


Answer: A

Mathematics

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Solve the system.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4

A. (-3, 0, 4) B. (0, -6, 1) C. (0, 6, -1) D. (3, 0, -4)

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Factor.5x6 - 45x5  + 70x4

A. 5x4(x - 7)(x - 2) B. 5x4(x2 - 9x + 14) C. x4(5x - 35)(x - 2) D. x4(x - 7)(5x - 10)

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Find the domain of the rational function.f(x) = 

A. {x|x ? 0} B. {x|x ? 6} C. {x|x ? -6} D. all real numbers

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