Question

How do you evaluate the definite integral `int (x+4)dx` from [-1,3]?

Answer 1

`39/4`

Explanation:

`\int_-1^3(x+4)\ dx`

`=(x^2/2+4x)_-1^3`

`=3^2/2+4(3)-1^2/2-4(1)`

`=39/4`