How do I find the total distance traveled for this problem?

rkang31

New member
Suppose that a particle moves according to the law of motion

s = t^4 - 6t + 21

Find the total distance traveled during the first 8 seconds.

I have already tried plugging in the value I get when I set the derivative equal to 0 and 8 and got 4048. But that is not right. Any help would be appreciated.
 
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