document.write( "Question 867979: What is the period of
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Algebra.Com's Answer #523306 by stanbon(75887)\"\" \"About 
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What is the period of
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\n" ); document.write( "Period = (2pi)/a
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\n" ); document.write( "In general, if y = a*cos(bx+c)+d, the period = (2pi)/b
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