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(Solved): EXAMPLE 3 Express the definite integral \int_3^7 (x^(2)-1)dx as a limit of Riemann sums. Solution We ...



EXAMPLE 3 Express the definite integral \int_3^7 (x^(2)-1)dx as a limit of Riemann sums. Solution We have \int_3^7 (x^(2)-1)dx=\lim_(n->\infty )((x_(0)^(2)-1)+(x_(1)^(2)-1)+cdots+(x_(n-1)^(2)-1))w where w=(4)/(n) and x_(0)=3,x_(1),x_(2),dots,x_(n)=7 all divide the interval 3,7 up into n even subintervals, all of width w.


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