Find the approximate area under the curve by dividing the intervals into n subintervals and then adding up the areas of the inscribed rectangles. The height of each rectangle may be found by evaluating the function for each value of x.

y=2x square root x^+1 between x=0 and x=6 for n1= 12 and n2= 6

find the wxact area under the curve using integration y=2x square root x^2+1 between x=0 and x=6