運算式 4: "x" equals cosine left parenthesis, "y" minus "a" , right parenthesis minus 2.1 left brace, negative 1 plus "a" less than "y" less than 1 plus "a" , right brace 有圖檔。 要進行圖形閱讀，請按 Alt + T 鍵。x=cosy−a−2.1−1+a<y<1+a
4
運算式 5: "b" equals 0.5 8b=0.58
00
piπ
5
運算式 6: "y" less than or equal to negative StartAbsoluteValue, cos left parenthesis, "x" minus "c" , right parenthesis , EndAbsoluteValue 有圖檔。 要進行圖形閱讀，請按 Alt + T 鍵。y≤−cosx−c
