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READING SET NOTATION

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The concepts for this exercise are summarized below.
For a complete discussion, read the text. (Click here for solutions to the text exercises.)


The sentence   x ∈ ℝ    is read differently depending on its context:

x ∈ ℝ   (self-standing) is read as:   ex is in arr   or   ex is a real number .
Let   x ∈ ℝ    is read as:   Let ex be in arr   or   Let ex be a real number .
For all   x ∈ ℝ    is read as:   For all ex in arr   or   For all real numbers ex .

 
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Consider the sentence:


The best way to read  " x ∈ ℝ "   in the previous sentence is:
  
  
  





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