document.write( "Question 1151361: Please prove or disprove\r
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Algebra.Com's Answer #773105 by ikleyn(52921) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "I read this equation as  2cos(x) = sin(2x).\r\n" );
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document.write( "It is NOT POSSIBLE to \"prove or disprove\".\r\n" );
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document.write( "For some values of the angle \"x\" it is TRUE; for other values of the angle \"x\" it is FALSE.\r\n" );
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document.write( "It is TRUE if and only if x = .        ANSWER\r\n" );
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document.write( "It is FALSE for all other values of \"x\".      ANSWER\r\n" );
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document.write( "The correct formulation is \r\n" );
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document.write( "    \"solve the equation  2cos(x) = sin(2x)\",\r\n" );
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document.write( "but not \"prove or disprove\".\r\n" );
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document.write( "My answer is in the post.\r\n" );
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