Suppose that the velocity function of a particle moving along a coordinate line is `v(t)=9t^3+4` Find the average velocity of the particle over the time interval `1lt=tlt=4` by integrating.
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The average value of a function over an interval [a,b] is `1/(b-a)int_a^b f(x)dx`
Here the interval is [1,4] and the function `v(t)=9t^3+4`
The average value is :
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