document.write( "Question 516964: Not quite understanding what they are asking please help\r
\n" ); document.write( "\n" ); document.write( "Use the equation to determine f(x)=0
\n" ); document.write( "f(x)=-3cos(pie x - pie/2)-2
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Algebra.Com's Answer #346947 by lwsshak3(11628)\"\" \"About 
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Not quite understanding what they are asking please help
\n" ); document.write( "Use the equation to determine f(x)=0
\n" ); document.write( "f(x)=-3cos(pie x - pie/2)-2
\n" ); document.write( "**
\n" ); document.write( "-3cos(πx-π/2)-2=0
\n" ); document.write( "cos(πx-π/2)=-2/3
\n" ); document.write( "πx-π/2=2.30 radians
\n" ); document.write( "πx=2.30+π/2=3.87
\n" ); document.write( "x=3.87/π
\n" ); document.write( "x≈1.23
\n" ); document.write( "
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