Add.(7x2y2 + 6y4) + (12x2y2 + 5y4)
A. 19x2y2 + 11y4
B. 84x4y4 + 30y8
C. 19x4y4 + 11y8
D. 19x2y2 - 11y4
Answer: A
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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__tttt0506191043__f1q58g4.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.
Solve.log3 
= y
A. {-27} B. {3} C. {9} D. {-3}
Add.-|3| + |2|
A. -1 B. 1 C. 5 D. -5
Add.[15 + (-2)] + [19 + (-8)]
A. 24 B. 2 C. 44 D. -14