Expression 1: left parenthesis, 1 minus "a" , right parenthesis StartRoot, StartAbsoluteValue, 1 minus "x" squared , EndAbsoluteValue , EndRoot plus "a" sine left parenthesis, "x" , right parenthesis equals left bracket, negative 1 left brace, "a" equals 0 , right brace , 1 , right bracket times "y" left brace, StartFraction, negative 1 Over 1 minus "a" , EndFraction less than or equal to "x" less than or equal to StartFraction, 1 Over 1 minus "a" , EndFraction , right brace1−a1−x2+asinx=−1a=0,1·y−11−a≤x≤11−a