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If h > 0, find all values of h such that floor(h) * ceil(h) = 72. Express your answer using interval notation.

 Feb 22, 2018
 #1
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Note that

 

Floor   (  8  < h  < 9)  =  8

 

and

 

Ceiling  ( 8 < h < 9)   =  9

 

So

 

Floor ( 8 < h < 9)  *  Ceiling ( 8 < h < 9)  = 

8 * 9   = 

72

 

The interval   is     8 < h < 9

 

 

cool cool cool

 Feb 22, 2018

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