From Förberedande kurs i matematik 1

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-	{{NAVCONTENT_START}}	+	<math>\mathop{\text{lg}} 10000</math> is that number which should stand in the coloured box in the equality
-	<center> [[Image:3_3_2b.gif]] </center>	+
-	{{NAVCONTENT_STOP}}	+	{{Displayed math||<math>10^{\bbox[#FFEEAA;,1.5pt]{\phantom{\scriptstyle ??}}} = 10000</math>}}
		+
		+	and because
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		+	{{Displayed math||<math>10^4 = 10000</math>}}
		+
		+	we see that <math>\mathop{\text{lg}} 10000 = 4\,</math>.

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Current revision

\displaystyle \mathop{\text{lg}} 10000 is that number which should stand in the coloured box in the equality

\displaystyle 10^{\bbox[#FFEEAA;,1.5pt]{\phantom{\scriptstyle ??}}} = 10000

and because

\displaystyle 10^4 = 10000

we see that \displaystyle \mathop{\text{lg}} 10000 = 4\,.