Q Mathematics 178 Name: Week 14 Written Assignment Show all work. Answers given without the proper mathematical explanation will receive little to no credit. 1. Approximate the area under the curve y = x2 + 2x and above the x-axis over the in- terval [1; 5] using 4 subintervals and left-handed end points. Draw the function and the approximating rectangles. Answer: 2. Use integration to nd the exact area under the curve y = x2 +2x and above the x-axis over the interval [1; 5] Answer:

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