- #1

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- 132

- Homework Statement
- Please see below

- Relevant Equations
- Please see below

For number 18,

The solution is,

However, should they not write "For ## -∞ < a < -2##" since ##a ≠ -∞## (infinity is not a number)?

Many thanks!

The solution is,

However, should they not write "For ## -∞ < a < -2##" since ##a ≠ -∞## (infinity is not a number)?

Many thanks!