document.write( "Question 878244: I am getting stuck please show steps
\n" ); document.write( "Evaluate the intergral
\n" ); document.write( "x cos 15x dx \n" ); document.write( "

Algebra.Com's Answer #529780 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Use integration by parts,
\n" ); document.write( " $\"int%28u%2Cdv%29=uv-int%28v%2Cdu%29\"$
\n" ); document.write( "Let
\n" ); document.write( " $\"dv=cos%2815x%29dx\"$
\n" ); document.write( " $\"u=x\"$
\n" ); document.write( "Then,
\n" ); document.write( " $\"v=%281%2F15%29sin%2815x%29\"$
\n" ); document.write( " $\"du=dx\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"int%28u%2Cdv%29=uv-int%28v%2Cdu%29\"$
\n" ); document.write( "

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