Question

f(x)=x^2 between x=2 and x=4 using two rectangles to estimate the area under f(x)= using four rectangles to estimate the area under f(x)=

Answer 1

15 and 15/2 are the answers i got

Answer 2

are you using upper rectangles or lower rectangles ..?

Answer 3

i thing lower

Answer 4

since it says under

Answer 5

ok... so it's like

Answer 6

delta x [(f x0)+(fx1)
4-2 / 2 =1
1(f(2)+f(3))
1(4+9)
=15
for the first one

Answer 7

slight error 4 + 9 = 13

Answer 8

for the one with 4 triangle
4-2 / 4 = 1/2
1/2(f(2)+f(3)
1/2 (13)
13/2

Answer 9

well with 4 rectangles each will have a width of 1/2



so you will have areas 1/2 x 2 = 1/2 x 25/4 = 1/2 x 3 = 1/2 x 49/4 =

then add them all