Preview Activity 4.3.1.For this problem, you will need to use the Desmos Riemann SumCalculator. (This link opens a new ta(b)/(w)indow.)Initially, the calculator shows a left Riemann sum with n=5 subintervalsfor the function f(x)=2x+1 on the interval 1,4. Use the applet tocompute the following sums for this function on this interval.L_(5)=,M_(5)=R_(5)=L_(25)=,M_(25)=,R_(25)=L_(100)=,M_(100)=,R_(100)=Now use basic geometry to determine the exact area bounded byf(x)=2x+1 and the x-axis on the interval 1,4.Exact Area =