document.write( "Question 733495: how do you graph this y=8 cos 5x? \n" ); document.write( "

Algebra.Com's Answer #448445 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
You can make $\"+5x+\"$ change in $\"+pi%2F2+\"$ increments
\n" ); document.write( "as follows:
\n" ); document.write( " $\"+5x%5B1%5D+=+0+\"$ , $\"+x%5B1%5D+=+0+\"$
\n" ); document.write( " $\"+5x%5B2%5D+=+pi%2F2+\"$ , $\"+x%5B2%5D+=+pi%2F10+\"$
\n" ); document.write( " $\"+5x%5B3%5D+=+pi+\"$ , $\"+x%5B3%5D+=+pi%2F5+\"$
\n" ); document.write( " $\"+5x%5B4%5D+=+%283%2Api%29%2F2+\"$ , $\"+x%5B4%5D+=+%283%2Api%29%2F10+\"$
\n" ); document.write( " $\"+5x%5B5%5D+=+2%2Api+\"$ , $\"+x%5B5%5D+=+%282%2Api%29%2F5+\"$
\n" ); document.write( "----------------------------------
\n" ); document.write( " $\"+y%5B1%5D+=+8%2Acos%28+5%2A0+%29+\"$
\n" ); document.write( " $\"+y%5B2%5D+=+8%2Acos%28+5%2A%28pi%2F10%29+%29+\"$
\n" ); document.write( " $\"+y%5B3%5D+=+8%2Acos%28+5%2A%28pi%2F5%29+%29+\"$
\n" ); document.write( " $\"+y%5B4%5D+=+8%2Acos%28+5%2A%283%2Api%2F10+%29%29+\"$
\n" ); document.write( " $\"+y%5B5%5D+=+8%2Acos%28+5%2A%282%2Api%2F5%29%29+\"$
\n" ); document.write( "--------------------------
\n" ); document.write( " $\"+y%5B1%5D+=+8%2A1+\"$
\n" ); document.write( " $\"+y%5B2%5D+=+8%2A0+\"$
\n" ); document.write( " $\"+y%5B3%5D+=+8%2A%28-1%29+\"$
\n" ); document.write( " $\"+y%5B4%5D+=+8%2A0+\"$
\n" ); document.write( " $\"+y%5B5%5D+=+8%2A1+\"$
\n" ); document.write( "--------------
\n" ); document.write( "Now just plot the points
\n" ); document.write( "( x1 , y1 ) = $\"+0+\"$ , $\"+8+\"$
\n" ); document.write( "( x2 , y2 ) = $\"+pi%2F10+\"$ , $\"+0+\"$
\n" ); document.write( "( x3 , y3 ) = $\"+pi%2F5+\"$ , $\"+-8+\"$
\n" ); document.write( "etc.
\n" ); document.write( "The cycles just keep repeating\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );