Write the geometric series in summation notation.9 + 27 + 81 + 243 + 729
A. 
B. 
C. 
D. 
Answer: D
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Graph the function.f(x) = 2x
A. 
B. 
C. 
D. 
Provide an appropriate response.Starting at middle C with a frequency of 260 cps, find the frequency of the note a an octave and a fourth above middle C.
A. 676 B. 716 C. 689 D. 694
Use the Root Test to determine if the series converges or diverges.
A. Diverges B. Converges
Solve the problem.A product of two oscillations with different frequencies such as f(t) = sin(10t) sin(t)is important in acoustics. The result is an oscillation with "oscillating amplitude." src="https://sciemce.com/media/4/ppg__tttt0523191219__f1q44g4.jpg" alt="" style="vertical-align: -4.0px;" /> last two functions constitute an "envelope" for the function g(t). For certain values of t, the two cosine functions in g(t) cancel each other out and near-silence occurs; between these values, the two functions combine in varying degrees. The phenomenon is known (and heard) as "beats." For what values of t do the functions cancel each other?
What will be an ideal response?
the product f(t) of the two oscillations as a sum of two cosines and call it g(t).
a graphing utility, graph the function g(t) on the interval 0 ? t ? 2?.
the same system as your graph, graph y = sin t and y = -sin t.