document.write( "Question 821874: Solve the equation:\r
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Algebra.Com's Answer #494478 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "Solve the equation:
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document.write( "e^x - 12e^-x - 1 = 0
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document.write( "   |Multiplying thru by e^x so as all denominators = 1
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document.write( "  e^(2x) - 12 - e^x = 0
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document.write( " (e^x - 4)(e^x + 3) = 0   (tossing out negative value for e^x
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document.write( "    e^x = 4
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document.write( "       x = ln(4) \n" );
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