document.write( "Question 809217: Find the first three x-intercepts of the graph of the given function on the positive x-axis.\r
\n" ); document.write( "\n" ); document.write( "f(x) = −2 sin(7x + π) \n" ); document.write( "
Algebra.Com's Answer #487555 by lwsshak3(11628)\"\" \"About 
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Find the first three x-intercepts of the graph of the given function on the positive x-axis.
\n" ); document.write( "f(x) = −2 sin(7x + π)
\n" ); document.write( "set f(x)=0
\n" ); document.write( "sin(7x + π)=0
\n" ); document.write( "inverse sin(0)=0,π,2π,3π,4π (0 and 2π do not result in x-intercepts on the positive x-axis)
\n" ); document.write( "..
\n" ); document.write( "1st intercept
\n" ); document.write( "sin(7x + π)=2π
\n" ); document.write( "7x=2π-π=π
\n" ); document.write( "x=π/7
\n" ); document.write( "x=0.448799
\n" ); document.write( "..
\n" ); document.write( "2nd intercept
\n" ); document.write( "sin(7x + π)=3π
\n" ); document.write( "7x+π=3π
\n" ); document.write( "7x=3π-π=2π
\n" ); document.write( "x=2π/7
\n" ); document.write( "x=0.897598
\n" ); document.write( "..
\n" ); document.write( "3rd intercept
\n" ); document.write( "sin(7x + π)=4π
\n" ); document.write( "7x+π=4π
\n" ); document.write( "7x=3π-π=3π
\n" ); document.write( "x=3π/7
\n" ); document.write( "x=1.346397
\n" ); document.write( " \n" ); document.write( "
\n" );