document.write( "Question 36378: instruction: find exact & approximate solutions to the problem.\r
\n" );
document.write( "\n" );
document.write( "106. One on One. Find two positive real numbers that differ by 1 and have a product of 1. \n" );
document.write( "
Algebra.Com's Answer #22505 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! Find two positive real numbers..X AND Y SAY that differ by 1 and have a product of 1. \n" ); document.write( "X-Y=1..................................I \n" ); document.write( "XY=1 \n" ); document.write( "(X+Y)^2=(X-Y)^2+4XY=1^2+4*1=5 \n" ); document.write( "X+Y=SQRT(5).................................II \n" ); document.write( "EQN.I+EQN.II GIVES \n" ); document.write( "2X=1+SQRT(5) \n" ); document.write( "X=(1+SQRT(5))/2=(2.236+1)/2=1.618 \n" ); document.write( "EQN.II-EQN.I..GIVES \n" ); document.write( "2Y=SQRT(5)-1 \n" ); document.write( "Y=(SQRT(5)-1)/2=(2.236-1)/2=0.618 \n" ); document.write( " |