運算式 4: left parenthesis, "x" , right parenthesis squared equals 6 left parenthesis, "y" plus 3 , right parenthesis left brace, negative 2 less than or equal to "x" less than or equal to 2 , right brace 有圖檔。 要進行圖形閱讀，請按 Alt + T 鍵。x2=6y+3−2≤x≤2
4
運算式 5: left parenthesis, "x" plus 2 , right parenthesis squared plus left parenthesis, "y" minus 2 , right parenthesis squared less than or equal to .2 有圖檔。 要進行圖形閱讀，請按 Alt + T 鍵。x+22+y−22≤.2
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運算式 6: left parenthesis, "x" minus 2 , right parenthesis squared plus left parenthesis, "y" minus 2 , right parenthesis squared less than or equal to .2 有圖檔。 要進行圖形閱讀，請按 Alt + T 鍵。x−22+y−22≤.2
