Asked by ConfusedEngineer
                find Arc Length of (9-x^(2/3))^(3/2)
I square the second derivative and have it under the square root but then get stuck at (-9x^-1)+x^(-1/3)+1
Help?
            
        I square the second derivative and have it under the square root but then get stuck at (-9x^-1)+x^(-1/3)+1
Help?
Answers
                    Answered by
            Reiny
            
    I would be confused too.
You have to state the beginning and end of your arc.
Secondly, you didn't state the equation of the graph for which you need the arc length.
I tested your problem with Wolfram, by giving it a function name, and I arbitrarily chose from 2 to 5
here it what the magical website told me
http://www.wolframalpha.com/input/?i=arc+length++%289-x%5E%282%2F3%29%29%5E%283%2F2%29+from+2+to+5
We need more information.
    
You have to state the beginning and end of your arc.
Secondly, you didn't state the equation of the graph for which you need the arc length.
I tested your problem with Wolfram, by giving it a function name, and I arbitrarily chose from 2 to 5
here it what the magical website told me
http://www.wolframalpha.com/input/?i=arc+length++%289-x%5E%282%2F3%29%29%5E%283%2F2%29+from+2+to+5
We need more information.
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