1. Using the following function, estimate the area under the curve using the Left End Point Method with 4 rectangles. f (ac) = -Va-3 on the interval [1, 13] O -33 -3V/7- 3V10 O -45 - 3V7 O -45 - 3V/7- 3V10 O -42 -3V7 - 3V10 - 3V13 O -33 - 3V10 x+5 -5 5x- $ $evaluate f3, f (x) dx using geometric reasoning. 2. For f (2) = 2(3 -2) 15253" Of', f (2) dac = 44 Of', f (ze) dac = 16 Of, f ( ac ) dac = 27 Of's f (2) dac = 22 Of', f (ac) dac = 803. Let f be a function whose rst derivative is f I013) = I; 4(2t4 + 1)4 dt. For 2