1.Estimate the area under the graph of f(x)=1/x+3 the interval [?1,4] using five approximating rectangles and right endpoints.

Rn=

Repeat the approximation using left endpoints.

Ln=

Report answers accurate to 4 places. Remember not to round too early in your calculations.

2Approximate the area under the curve y=x2+4 x=0 to x=3 using a left sum with 6 subdivisions. The area is approximately

3

10 Below is the graph of y = an) . Find f(a:)dm . Round your answer to three decimal places. 0 Submit