13.4.9-1 Approximate the area under the following curve and above the x-axis on the given interval, using rectangles whose height is the value of the function at the left side of the rectangle (a) Use two rectangles. (b) Use four rectangles (c) Use a graphing calculator (or other technology) and 40 rectangles 2 f(x) 3-x [-1,1 (a) The approximated area when using two rectangles is (Type an integer or decimal rounded to two decimal places as needed.) square units Enter your answer in the answer box and then click Check Answer Check Aswer Clear All parts remaining 2 10:08A 10/22/2 W NO o t 37 Type here to search

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