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Graph trigonometric function y=-3/2 sin2x alex

A) Reflection across x-axis
B) Compression by a factor of 2
C) Phase shift of π/2
D) Vertical stretch by a factor of 3/2

1 Answer

6 votes

Final answer:

The trigonometric function y = -\(\frac{3}{2}\) sin(2x) represents a reflection across the x-axis, a vertical stretch by a factor of \(\frac{3}{2}\), and a horizontal compression by a factor of 2. There is no phase shift or vertical shift present.

Step-by-step explanation:

The trigonometric function in question is y = -\(\frac{3}{2}\) sin(2x). When we analyze its transformations, we can identify the following characteristics:

  • A) Reflection across the x-axis: This occurs because of the negative sign in front of the \(\frac{3}{2}\). It means that the graph of sin(2x) is flipped over the x-axis.
  • D) Vertical stretch by a factor of \(\frac{3}{2}\): Here, the absolute value of \(\frac{3}{2}\), which is greater than 1, indicates that the graph is stretched vertically compared to the basic sin(x) function.
  • Compression by a factor of 2: The '2' inside the sine function (in sin(2x)) causes the function to complete its cycle in half the time of the standard sine function, indicating a horizontal compression by a factor of 2.

There is no phase shift like \(\pi/2\) present, as there is no horizontal translation included in the function y = -\(\frac{3}{2}\) sin(2x). Additionally, the no vertical shift is indicated by the lack of a constant term added or subtracted from the function.

User Tamara Wijsman
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