Find the derivative of the function at the given value of x using a graphing utility. If necessary, round to four decimal places.f(x) = 4x cos x; x = 
Fill in the blank(s) with the appropriate word(s).
-6.2832
Mathematics
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Answer the question.True or False.- 
is an imaginary number.
Answer the following statement true (T) or false (F)
Mathematics
Provide an appropriate response.The position of a particle is given by r(t) = sin 2t i + cos 3t j. Find the velocity vector for the particle.
A. cos 2t i - sin 3t j B. 2 i + 3 j C. 2 cos 2t i - 3 sin 3t j D. 2 sin 2t i + 3 cos 3t j
Mathematics
Write the expression in simplest form. If a radical appears in the denominator, rationalize the denominator.
A. 12x -2
B. 12x - 1
C. 12x + 1
D. 
Mathematics
Evaluate.
A. 126 B. 2,686,320 C. 68,880 D. 1722
Mathematics