Graph the equation for values of x between 0° and 360° in multiples of 15°. y = cos(2x) The x y-coordinate plane is given. The curve begins at the point (0°, 1), goes down and right, crosses the x-axis at x = 90°, changes direction at the point (180°, −1), goes up and right, crosses the x-axis at x = 270°, and ends at the point (360°, 1).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Graph the equation for values of x between 0° and 360° in multiples of 15°.
y = cos(2x)
The x y-coordinate plane is given. The curve begins at the point (0°, 1), goes down and right, crosses the x-axis at x = 90°, changes direction at the point (180°, −1), goes up and right, crosses the x-axis at x = 270°, and ends at the point (360°, 1).
 
The x y-coordinate plane is given. The curve begins at the point (0°, 2), goes down and right, crosses the x-axis at x = 90°, changes direction at the point (180°, −2), goes up and right, crosses the x-axis at x = 270°, and ends at the point (360°, 2).
 
The x y-coordinate plane is given. The curve begins at the origin, goes down and right, changes direction at the point (90°, −1), goes up and right, crosses the x-axis at x = 180°, changes direction at the point (270°, 1), goes down and right, and ends at the point (360°, 0).
 
The x y-coordinate plane is given. The curve begins at the point (0°, 1), goes down and right, crosses the x-axis at x = 45°, changes direction at the point (90°, −1), goes up and right, crosses the x-axis at x = 135°, changes direction at the point (180°, 1), goes down and right, crosses the x-axis at x = 225°, changes direction at the point (270°, −1), goes up and right, crosses the x-axis at x = 315°, and ends at the point (360°, 1).

 

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