Solve the given equation for x.y = 8 cos 3x

A. x =  cos-1 
B. x =  cos-1 
C. x = 8 cos-1 
D. x = 3 cos-1 

Answer: A

Mathematics

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Find the quadratic approximation of f at x = 0.f(x) = tan 9x

A. Q(x) = 1 + 9x2
B. Q(x) = 1 - x2
C. Q(x) = 1 + x2
D. Q(x) = 9x

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Mathematics

Solve the initial value problem.Differential Equation:  = -3ti + 3tj + 5tkInitial Condition: r(0) = -4i + 6k

A. r(t) = (-3t2 - 8)i + 3t2j  + (5t2 + 12)k
B. r(t) = i + t2j  +  k
C. r(t) = i + t2j  -  k
D. r(t) = i + t2j  +  k

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Mathematics

Perform the operation indicated. ÷ 

A.
B.
C.
D.

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Mathematics

Provide an appropriate response.Multiply two fractions by  the numerators and  the denominators.

A. multiplying; canceling B. adding; multiplying C. multiplying; multiplying D. multiplying; adding

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Mathematics