ANSWERS: 2
  • Find the local extrema first: find f '(x) solve for f '(x) = 0, for each possible extrema check if sign of f '(x) is changing. -ve to +ve = minima. +ve to -ve = maxima. The absolute maximum over the interval is the maximum of the local maxima except you must also check the values of the function at the two end points of the interval. Same for minima.
  • i think the limit is -piesin(piex)

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