document.write( "Question 1016415: Find f ’(x) if \r
\n" ); document.write( "\n" ); document.write( " f(x) = 3 x^-1 + 5 x^8 - 1\r
\n" ); document.write( "\n" ); document.write( "and evaluate f ’(1). (Keep 2 decimal places) \n" ); document.write( "

Algebra.Com's Answer #632834 by fractalier(6550) $\"\"$ $\"About$

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\n" ); document.write( "f(x) = 3x^-1 + 5x^8 - 1
\n" ); document.write( "f'(x) = -3x^-2 + 40x^7
\n" ); document.write( "f'(1) = -3 + 40 = 37 \n" ); document.write( "

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