Expression 3: "y" equals 5 times left parenthesis, tanh left parenthesis, StartFraction, "x" minus 5 Over "p" , EndFraction , right parenthesis plus 1 , right parenthesisy=5·tanhx−5p+1
3
Expression 4: "y" equals 5 left parenthesis, StartFraction, 2 Over pi , EndFraction arctan left parenthesis, "s" left parenthesis, "x" minus 5 , right parenthesis , right parenthesis plus 1 , right parenthesisy=52πarctansx−5+1