Expression 4: StartFraction, 1 Over "x" squared , EndFraction plus StartFraction, 1 Over "y" squared , EndFraction less than or equal to StartFraction, 1 Over left bracket, .6 , .7 ... 1.5 , right bracket squared , EndFraction1x2+1y2≤1.6,.7...1.52
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Expression 6: absolute value left parenthesis, left bracket, 1 , ... , 10 , right bracket "x" , right parenthesis greater than or equal to 0abs1,...,10x≥0
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Expression 7: 1 greater than 0 left brace, "x" squared plus "y" squared less than or equal to left bracket, .1 , .3 ... 1 , right bracket squared , right brace1>0x2+y2≤.1,.3...12
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Expression 8: 1 greater than 0 left brace, StartFraction, 1 Over "x" squared , EndFraction plus StartFraction, 1 Over "y" squared , EndFraction less than or equal to StartFraction, 1 Over left bracket, .6 , .8 ... 1.5 , right bracket squared , EndFraction , right brace1>01x2+1y2≤1.6,.8...1.52