運算式 30: StartFraction, 1 Over 100 , EndFraction "K" times "T" Superscript, floor left parenthesis, "x" , right parenthesis , Baseline left brace, "K" Subscript, "x" , Baseline left parenthesis, "x" , right parenthesis greater than 0 , right brace1100K·TfloorxKxx>0
30
investment R/month at rate T
31
運算式 32: StartFraction, 1 Over 100 , EndFraction "R" StartFraction, 1 minus "T" Superscript, floor left parenthesis, "x" , right parenthesis , Baseline Over 1 minus "T" , EndFraction left brace, "K" Subscript, "x" , Baseline left parenthesis, "x" , right parenthesis greater than 0 , right brace1100R1−Tfloorx1−TKxx>0
32
yet to repay
33
運算式 34: StartFraction, 1 Over 100 , EndFraction "K" Subscript, "x" , Baseline left parenthesis, "x" , right parenthesis left brace, "K" Subscript, "x" , Baseline left parenthesis, "x" , right parenthesis greater than 0 , right brace1100KxxKxx>0
