Question 53723
FIND THE DOMAIN,RANGE,AND PERIOD OF THE FOLLOWING FUNCTIONS. PLEASE HELP I HAVE NO CLUE AND WE ARE SUPPOSED TO GRAPH IT ON A TI-82 CALCULATOR TO CHECK THE ANSWERS. 
Y=2SIN(X-PI/4)
Domain is all Real Numbers: Range is  -2<=y<=2
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Y=-2SIN(PIX+PI)
Domain is all Real Numbers: Range is -2<=y<=2
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Y=-COS(2X-PI)
Domain is all real Numbers: Range is -1<=y<=1
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Y=6COS(3X+PI/2)
Domain is all Real Numbers: Range is -6<=y<=6
Cheers,
Stan H.