document.write( "Question 167703This question is from textbook Algebra and Trigonometry
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Algebra.Com's Answer #123620 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
Edwin's solution follows:\r
\n" ); document.write( "\n" ); document.write( "In general, how do I find the logarithm of the answer
\n" ); document.write( "ex: evaluate \"1776%5E53\"
\n" ); document.write( "I can get \"53%2Alog%281776%29+=+log%28x%29\", but what is next?
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document.write( "You could get your calculator and find \"log%281776%29\" which is\r\n" );
document.write( "\"3.249442961\" and then mutiply that by \"53\" to get\r\n" );
document.write( "\"172.220477\". However that won't get you any closer\r\n" );
document.write( "to finding \"1776%5E53\"!\r\n" );
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document.write( "That's because calculators as a rule can only work \r\n" );
document.write( "directly with numbers less than \"10%5E100\", \"1 google\".\r\n" );
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document.write( "You can't get \"1776%5E53\" on a calculator directly because \r\n" );
document.write( "that number is bigger than googol. Most calculators made today \r\n" );
document.write( "can do anything but give an overflow error message for a google \r\n" );
document.write( "and anything larger.  \r\n" );
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document.write( "However you can get larger numbers indirectly on your calculator.\r\n" );
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document.write( "On my calculator I find that I can get \"1776%5E30\" \r\n" );
document.write( "directly as \"matrix%281%2C3%2C3.042908149%2C+%22%D7%22%2C+10%5E97%29\"\r\n" );
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document.write( "However when I try to get \"1776%5E31\" I get an overflow\r\n" );
document.write( "error message.  \r\n" );
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document.write( "We can break \"1776%5E53\" down this way:\r\n" );
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document.write( "\"1776%5E53=%281776%5E30%29%281776%5E23%29\" both of which can be \r\n" );
document.write( "found on the calculator:\r\n" );
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document.write( "\"matrix%281%2C5%2C1776%5E30%2C+%22=%22%2C+3.042908149%2C+%22%D7%22%2C+10%5E97%29\"  \r\n" );
document.write( "\"matrix%281%2C5%2C1776%5E23%2C+%22=%22%2C+5.459943055%2C+%22%D7%22%2C+10%5E74%29\"\r\n" );
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document.write( "Then we can multiply those decimal parts, \"matrix%281%2C5%2C3.042908149%2C+%22%D7%22%2C5.459943055%2C%22=%22%2C16.61410521%29++\" \r\n" );
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document.write( "then add the exponents of ten and get \"matrix%281%2C5%2C++10%5E97%2C+%22%D7%22%2C+10%5E74%2C+%22=%22%2C+10%5E171%29\"\r\n" );
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document.write( "So therefore\r\n" );
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document.write( "\"matrix%281%2C5%2C+1776%5E53%2C+%22=%22%2C+16.61410521%2C+%22%D7%22%2C+10%5E171%29\"\r\n" );
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document.write( "However, that's not in scientific notation because \"16.61410521\"\r\n" );
document.write( "is not less than 10, so we write it in scientific notation as\r\n" );
document.write( "\"matrix%281%2C3+%2C1.661410521%2C+%22%D7%22%2C+10%5E1%29\", then substituting we have\r\n" );
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document.write( "or adding the exponents of ten:\r\n" );
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document.write( "\"matrix%281%2C5%2C+1776%5E53%2C+%22=%22%2C+1.661410521%2C+%22%D7%22%2C+10%5E172%29\"\r\n" );
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document.write( "Notice that we could have broken \"1776%5E53\" down in a number\r\n" );
document.write( "of other ways, for example:\r\n" );
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document.write( "so\r\n" );
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document.write( "And so we have, as above:\r\n" );
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document.write( "\"matrix%281%2C5%2C+1776%5E53%2C+%22=%22%2C+1.661410499%2C+%22%D7%22%2C+10%5E172%29\"\r\n" );
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document.write( "There is a slight difference between the two.  I would guess\r\n" );
document.write( "that that latter is closer to the true value, but we could\r\n" );
document.write( "safely round either answer to this: \r\n" );
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document.write( "\"matrix%281%2C5%2C+1776%5E53%2C+%22=%22%2C+1.6614105%2C+%22%D7%22%2C+10%5E172%29\"\r\n" );
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document.write( "Edwin

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