document.write( "Question 475817: Find the magnitude of < x2,2> plus <2,x2> \n" ); document.write( "
Algebra.Com's Answer #326317 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "\r\n" );
document.write( "< x²,2> + <2,x²> = <2+x²,2+x²>\r\n" );
document.write( "                 _______________    _______         _\r\n" );
document.write( "∥<2+x²,2+x²>∥ = Ö(2+x²)²+(2+x²)² = Ö2(2+x)² = |2+x|Ö2\r\n" );
document.write( "\r\n" );
document.write( "Let's get the dot product of <4,2,3> and <2,-1,-2> \r\n" );
document.write( "\r\n" );
document.write( "<4,2,3>•<2,-1,-2> = (4)(2)+(2)(-1)+(3)(-2) = 8-2-6 = 0\r\n" );
document.write( "\r\n" );
document.write( "So they are orthogonal (perpendicular). \r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( " \n" ); document.write( "
\n" );