between 1 and 2. i) delta triangle x=  ii) x1=      ,       x2=               ,       x3=          ,        x4= iii) The first term in the summation is  .         iv)  The sum of all rectangles is   . b)  Use n intervals and right endpoints to estimate the area under the curve between 1 and 2. i)  delta triangle x=  ii) x1=  iii) xi=

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