Expression 4: left parenthesis, negative ln left parenthesis, StartFraction, left parenthesis, "x" minus "l" , right parenthesis Over left parenthesis, "t" minus "l" , right parenthesis , EndFraction , right parenthesis times left parenthesis, negative "t" plus "l" , right parenthesis , right parenthesis plus "t" left brace, "x" greater than "t" , right brace Has graph. To audio trace, press ALT+T.−lnx−lt−l·−t+l+tx>t
4
Expression 5: "l" equals 1.0 0 7 0 4l=1.00704
11
1.11.1
5
Expression 6: "t" equals 0.8t=0.8
00
11
6
y=1 intersection
7
Expression 8: "x" equals negative natural log left parenthesis, StartFraction, negative "l" plus 1 Over "t" minus "l" , EndFraction , right parenthesis left parenthesis, negative "t" plus "l" , right parenthesis plus "t" equals 1.5 0 0 0 6 5 1 4 7 2 7 Has graph. To audio trace, press ALT+T.x=−ln−l+1t−l−t+l+t