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June 3rd, 2014, 07:55 AM   #1
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Unhappy How to find the average rate of change

Find the average rate of change the function over the given interval

f(t)=3+sin t

a.[ pi/2, pi]

b[-pi/2,3pi/2]


I'm stuck with this question...I know the answer is a= -2/pi, and b=0

and I know I need to use the formula of f(x2)-f(x1)/x2-x1.

But I need the really detailed information. Thanks for your help.
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June 4th, 2014, 05:51 PM   #2
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Let x1=pi/2, x2=pi
delta(x)=x2 -x1, delta(y)=f(x2)-f(x1)
Applying delta(y) /delta(x)
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