表达式1: left parenthesis, Start product from "n" equals negative 10 to 10, end product, StartFraction, StartAbsoluteValue, "x" minus "n" , EndAbsoluteValue Over "x" minus "n" , EndFraction , right parenthesis left parenthesis, "x" squared plus "y" squared minus 100 , right parenthesis greater than 010∏n=−10x−nx−nx2+y2−100>0
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表达式2: "L" equals left bracket, 0 , ... , 1 , right bracketL=0,...,1
