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fix typos relating to Dolbear domain #67

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Merged
mattboelkins merged 1 commit into from
Sep 12, 2026
Merged

fix typos relating to Dolbear domain #67

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2 changes: 1 addition & 1 deletion source/sec-changing-composite.xml
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Expand Up @@ -115,7 +115,7 @@
<subsection xml:id="subsec-changing-composite-in-context">
<title>Composing functions in context</title>
<p>
Recall Dolbear's function, <m>T = D(N) = 40 + 0.25N</m>, that relates the number of chirps per minute from a snowy cricket to the Fahrenheit temperature, <m>T</m>. We earlier established that <m>D</m> has a domain of <m>[40,160]</m> and a corresponding range of <m>[50,85]</m>. In what follows, we replace <m>T</m> with <m>F</m> to emphasize that temperature is measured in Fahrenheit degrees.
Recall Dolbear's function, <m>T = D(N) = 40 + 0.25N</m>, that relates the number of chirps per minute from a snowy cricket to the Fahrenheit temperature, <m>T</m>. We earlier established that <m>D</m> has a domain of <m>[40,180]</m> and a corresponding range of <m>[50,85]</m>. In what follows, we replace <m>T</m> with <m>F</m> to emphasize that temperature is measured in Fahrenheit degrees.
</p>

<p>
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2 changes: 1 addition & 1 deletion source/sec-changing-functions-models.xml
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Expand Up @@ -160,7 +160,7 @@
</definition>

<p>
For the Dolbear function <m>D(N) = 40 + 0.25N</m> in the context of modeling temperature as a function of the number of cricket chirps per minute, the domain of the function is <m>A = [40,180]</m><fn>The notation <q><m>[40,180]</m></q> means <q>the collection of all real numbers <m>x</m> that satisfy <m>40 \le x \le 80</m></q> and is sometimes called <q>interval notation</q>.</fn> and the codomain is <q>all Fahrenheit temperatures</q>. The codomain of a function is the collection of <em>possible</em> outputs, which we distinguish from the collection of <em>actual</em> ouputs.
For the Dolbear function <m>D(N) = 40 + 0.25N</m> in the context of modeling temperature as a function of the number of cricket chirps per minute, the domain of the function is <m>A = [40,180]</m><fn>The notation <q><m>[40,180]</m></q> means <q>the collection of all real numbers <m>x</m> that satisfy <m>40 \le x \le 180</m></q> and is sometimes called <q>interval notation</q>.</fn> and the codomain is <q>all Fahrenheit temperatures</q>. The codomain of a function is the collection of <em>possible</em> outputs, which we distinguish from the collection of <em>actual</em> ouputs.
</p>

<definition xml:id="def-function-range">
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