document.write( "Question 1181030: y=x^(7/2) - 7x^2, x>0
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Algebra.Com's Answer #810926 by MathLover1(20855)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "Critical points are points where the function is defined and its derivative is zero or undefined.\r
\n" ); document.write( "\n" ); document.write( "\"y=x%5E%287%2F2%29+-+7x%5E2\", \"x%3E0\"\r
\n" ); document.write( "\n" ); document.write( "derivate:\r
\n" ); document.write( "\n" ); document.write( "\"y\"'\"%28x%29+=+%287%2F2%29x%2A+%28x%5E%283%2F2%29+-+4%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%287%2F2%29x%2A+%28x%5E%283%2F2%29+-+4%29=0\"\r
\n" ); document.write( "\n" ); document.write( "=>\"%287%2F2%29x=0\"=>\"x=0\"=> exclude because given \"x%3E0\"\r
\n" ); document.write( "\n" ); document.write( "=>\"x%5E%283%2F2%29+-+4=0\"=>\"x%5E%283%2F2%29+=+4\"=>\"sqrt%28x%5E3%29+=+4\"
\n" ); document.write( "=>\"x%5E3+=+16\"=>\"x+=+2%2A+2%5E%281%2F3%29\"\r
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\n" ); document.write( "\n" ); document.write( "Critical point is at \"x+=+2%2A+2%5E%281%2F3%29\".\r
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