document.write( "Question 1147076: Determine logarithm of 59,436.\r
\n" ); document.write( "\n" ); document.write( "My attempt:\r
\n" ); document.write( "\n" ); document.write( "log 594 = 7738 (table).\r
\n" ); document.write( "\n" ); document.write( "4.7738\r
\n" ); document.write( "\n" ); document.write( "10^4.7738 = 59401.\r
\n" ); document.write( "\n" ); document.write( "Where did I miscalculate? Non-homework.\r
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Algebra.Com's Answer #768378 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "No miscalculation. If you use the table to find log(594) = 0.7738, then 10^4.7738 will be approximately 59400, which is what you found.

\n" ); document.write( "If you want a more accurate answer, you need to interpolate between the values given in the table.

\n" ); document.write( "Over very short intervals, the graph of a logarithm is nearly linear, so you can use linear interpolation.

\n" ); document.write( "log(594) = .7738
\n" ); document.write( "log(595) = .7745

\n" ); document.write( "The difference is .0007. Then a good approximation is

\n" ); document.write( "log(59436) = .7738 + .36(.0007) = .77405

\n" ); document.write( "Then using a calculator we find

\n" ); document.write( "10^4.77405 = 59436

\n" ); document.write( "to the nearest whole number -- which is what we want.
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