Evaluate the sum.
To calculate rectangular approximations to area using the left-endpoint with four subintervals, L4, for the given function, divide into equal subintervals so that the width of each rectangle is , where a, b are the endpoints of the interval and N is the number of rectangles.
Since we are using left endpoints, the first left endpoint x-value, x1, is 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
The formula for left-endpoint approximation is .
Substitute N = 4 and in the formula and simplify.
For find .
(Round your answers to four decimal places.)
UFPfACDOxzX9rlDg
2Og4UEB2nw1H7dPo
fpzogoeOkbmsBux4
6Yvgt1+y5CRhi2UG
Using the values found in step 2, find the approximation of over the given interval correct to four decimal places.
rSnPCAHRLeo=