Use finite approximation to estimate the area unde the graph of y = 5x² and above the graph of
f(x)=0 from X0 = 0 to Xn = 10 using
a. a lower sum with two rectangles of equal width.
b. a lower sum with four rectangles of equal width.
c. an upper sum with two rectangles of equal width.
d. an upper sum with four rectangles of equal width.
Type an integer or decimal