document.write( "Question 935645: if f(x) = 8^-x , what is the value of f(1/3)
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Algebra.Com's Answer #568895 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
\"+f%28x%29+=+8%5E%28-x%29+\"
\n" ); document.write( "\"+f%281%2F3%29+=+8%5E%28-1%2F3%29+\"
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\n" ); document.write( "The general rule for negative
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\n" ); document.write( "\"+a%5E%28-b%29+=+1%2Fa%5Eb+\" so,
\n" ); document.write( "\"+8%5E%28-1%2F3%29+=+1%2F%28+8%5E%281%2F3%29%29+\"
\n" ); document.write( "\"+1%2Froot%28+3%2C8+%29+=+1%2F2+\" answer
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\n" ); document.write( "If I didn't know this, I would have
\n" ); document.write( "to use a calculator, for example:
\n" ); document.write( "\"+root%28+4%2C8+%29+\" = ???
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