document.write( "Question 115690: I understand logarithms mostly but I can't remember how to do logarithms with a base other than 10 in my calculator. Please tell me how to put it in my calculator. \n" ); document.write( "

Algebra.Com's Answer #84192 by jim_thompson5910(35256) $\"\"$ $\"About$

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If you want to evaluate something like $\"log%282%2C%2864%29%29\"$ , use the change of base formula which says $\"log%28b%2C%28x%29%29=log%2810%2C%28x%29%29%2Flog%2810%2C%28b%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "So $\"log%282%2C%2864%29%29=log%2810%2C%2864%29%29%2Flog%2810%2C%282%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "To enter this into a calculator, just type: log(64)/log(2) \n" ); document.write( "

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