Mathematics B Regents High School Examination - The University Of The State Of New York, 2003 Page 13

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30 A student attaches one end of a rope to a wall at a fixed point 3 feet
above the ground, as shown in the accompanying diagram, and moves
the other end of the rope up and down, producing a wave described
by the equation y = a sin bx + c. The range of the rope’s height above
the ground is between 1 and 5 feet. The period of the wave is 4π.
Write the equation that represents this wave.
3 ft
3 ft
[13]
[OVER]
Math. B – Aug. ’03

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