수식 1: negative StartRoot, sin left parenthesis, "x" , right parenthesis , EndRoot plus StartRoot, StartAbsoluteValue, cos left parenthesis, "x" , right parenthesis , EndAbsoluteValue , EndRoot less than or equal to "y" less than or equal to StartRoot, sin left parenthesis, "x" , right parenthesis , EndRoot plus StartRoot, StartAbsoluteValue, cos left parenthesis, "x" , right parenthesis , EndAbsoluteValue , EndRoot 그래프가 존재합니다. 오디오 추적을 활성화하려면 Alt+T 를 누르세요.−sinx+cosx≤y≤sinx+cosx