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April 24, 2014

Homework Help: calculus (gr 12)

Posted by Maria on Tuesday, May 14, 2013 at 11:00am.

the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive?
a) 12pm
B) 10 am and 2pm
C) 11 am and 3 pm
D) 10 am,12pm and 2 pm

MULTIPLE CHOICE

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