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1) Find the arc length of the graph of the function over the indicated interval. Show...

1) Find the arc length of the graph of the function over the indicated interval. Show your work.

  y=ln(cosx)   ;   [ 0 , π/4]

2)

Find the surface area generated by revolving the graph about the x - axis over the indicated interval. Show your work.

  y=2x   ;   [ 0 , 3 ]

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