# Definite Integrals

### Exercises

#### Exercise 7

- Let
*Z*be the region between the graph of*g*and the*x*-axis on the interval [-4,0].

- Use a right-hand sum with 2 sub-intervals to estimate the area of
*Z*.

- Use a right-hand sum with 4 sub-intervals to estimate the area of
*Z*.

- Are your answers in (a) and (b) over- or under- estimates for the area of
*Z*?

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