Evaluate the integral by using the definition of the definite integral as given in the text.

Question

4

∫(4x-2)dx

1

The following formula will be useful in your work.

n

∑ k = n(n+1)/2

k=1

Answer 1

integral [4x-2] = 2x^2 - 2x

x=4: 32-8 = 24

x=1: 2 - 2 = 0

the area is 24