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Solution 3.3:2b

From Förberedande kurs i matematik 1

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

Current revision

lg10000 is that number which should stand in the coloured box in the equality

10=10000

and because

104=10000

we see that lg10000=4.