수식 3: "u" equals StartFraction, arcsin left parenthesis, sin left parenthesis, "x" minus "t" , right parenthesis , right parenthesis plus arcsin left parenthesis, sin left parenthesis, "x" plus "t" , right parenthesis , right parenthesis Over 2 , EndFractionu=arcsinsinx−t+arcsinsinx+t2
3
수식 4: "u" equals StartFraction, arcsin left parenthesis, sin left parenthesis, "x" minus "t" , right parenthesis , right parenthesis Over 2 , EndFractionu=arcsinsinx−t2
4
수식 5: "u" equals StartFraction, arcsin left parenthesis, sin left parenthesis, "x" plus "t" , right parenthesis , right parenthesis Over 2 , EndFractionu=arcsinsinx+t2