document.write( "Question 1061596: The function $\"+y+=+4+\"$ cos(½ $\"+x+\"$ ) has the period of\r
\n" ); document.write( "\n" ); document.write( "A) π/2\r
\n" ); document.write( "\n" ); document.write( "B) π\r
\n" ); document.write( "\n" ); document.write( "C) 2π\r
\n" ); document.write( "\n" ); document.write( "D) 4π\r
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Algebra.Com's Answer #676345 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+y+=+4%2Acos%28+%281%2F2%29%2Ax+%29+\"$
\n" ); document.write( "The cosine function repeats every $\"+2%2Api+\"$ radians
\n" ); document.write( "Check $\"+%281%2F2%29%2Ax+\"$ over $\"+0+\"$ radians to $\"+2%2Api+\"$ radians
\n" ); document.write( " $\"+%281%2F2%29%2Ax+=+0+\"$
\n" ); document.write( " $\"+x+=+0+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+%281%2F2%29%2Ax+=+2%2Api+\"$
\n" ); document.write( " $\"+x+=+4%2Api+\"$
\n" ); document.write( "----------------------
\n" ); document.write( "Answer is (D)
\n" ); document.write( "This function of $\"+x+\"$ repeats
\n" ); document.write( "every $\"+4%2Api+\"$ radians
\n" ); document.write( " \n" ); document.write( "

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