document.write( "Question 861603: Find |u|, |v|, |2u|, |1/2v|, |u+v|, |u-v| and |u|-|v|.\r
\n" ); document.write( "\n" ); document.write( "u=<10,-1>
\n" ); document.write( "v=<-2,2>\r
\n" ); document.write( "\n" ); document.write( "Please help with this. Struggling to understand Vectors. Thank you \n" ); document.write( "

Algebra.Com's Answer #519156 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"abs%28u%29=sqrt%2810%5E2%2B%28-1%29%5E2%29=sqrt%28101%29\"$
\n" ); document.write( " $\"abs%28v%29=sqrt%28%28-2%29%5E2%2B%282%29%5E2%29=sqrt%288%29=2sqrt%282%29\"$
\n" ); document.write( " $\"abs%282u%29=2abs%28u%29=2%2Asqrt%28101%29\"$
\n" ); document.write( " $\"abs%28%281%2F2%29u%29=%281%2F2%29abs%28u%29=sqrt%28101%29%2F2\"$
\n" ); document.write( "u+v=(10-2,-1+2)=(8,1)
\n" ); document.write( " $\"abs%28u%2Bv%29=sqrt%288%5E2%2B1%5E2%29=sqrt%2865%29\"$
\n" ); document.write( "u-v=(10-(-2),-1-2)=(12,-3)
\n" ); document.write( " $\"abs%28u-v%29=sqrt%2812%5E2%2B%28-3%29%5E2%29=sqrt%28153%29\"$
\n" ); document.write( " $\"abs%28u%29-abs%28v%29=sqrt%28101%29-2sqrt%282%29\"$
\n" ); document.write( " \n" ); document.write( "

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