Posted by **Shayna** on Monday, October 17, 2011 at 12:39pm.

(A) Given that P = {X0, X1, X2.......Xn} is an arbitrary partition of [a,b], find the lower and upper sum for f(x)=x+3.

(B) Use your answers to part (a) to evaluate the integral of f(x) from a to b.

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