# 2.1.4. Extended Exercise: Interval Arithmetic

Exercises:

- 2.7. Upper and lower bounds of interval
- 2.8. Subtraction of intervals
- 2.9. The width of an interval
- 2.10. Interval that spans zero
- 2.11. The signs of the endpoints of the intervals
- 2.12. Interval produced by center and percentage tolerance
- 2.13. Percentage tolerance of the product of two intervals
- 2.14. Different answers for the two ways of computing formulas for parallel resistors
- 2.15. A form of formula that no variable that represents an uncertain number is repeated
- 2.16. Different answers in equivalent algebraic expressions in general