document.write( "Question 1131076: Let f(x)=logx .
\n" ); document.write( "What is the average rate of change of f(x) from 4 to 6?
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Algebra.Com's Answer #747683 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "Let \"f%28x%29=log%28x%29\"
\n" ); document.write( "What is the average rate of change of \"f%28x%29+\"from \"4+\"to\"+6\"? \r
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29=log%28x%29\"
\n" ); document.write( "=>
\n" ); document.write( " \"f%284%29=log%284%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%286%29=log%286%29\"\r
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\n" ); document.write( "\n" ); document.write( "We have two ordered pairs:
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\n" ); document.write( "(\"4\",\"log%284%29\") and (\"6\",\"log%286%29\")\r
\n" ); document.write( "\n" ); document.write( "The average rate of change is the slope (m) of the secant line connecting the two points:\r
\n" ); document.write( "\n" ); document.write( "\"m+=+%28log%286%29+-+log%284%29%29%2F%286-4%29+=+%280.176091259055681242081289%29%2F2\"\"+0.088\"\r
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