Question

The estimated value of the integral from 0 to 2 of x^2 dx , using the trapezoidal rule with 4 trapezoids is
a) 2.75
b) 5.50
c) 1.88
d) 3.75

Answer 1

area = appr .5(0+.25) + .5(.25 + 1) + .5(1 + 2.25) + .5(2.25+4)
= .5(0 + .25 + .25 + 1 + 1 + 2.25 + 2.25 + 4)
= 5.5

Answer 2

2.75

I took the test its correct