On Page 13 of TIDU533, equation 24 shown below shows how to calculate R11. When I try to use the given example I get nothing shown in the photo.
R10 = 2490 ohms
Vmax = 15 V
Vmin = 5 V
Rpotmax = 7500 ohms
Rpotmin = 0 ohms
Vref = 0.8 V(given on page 12)
Solving for R11, i get -8.874 ohms, and obviously I'll also get the wrong answer for R7 using that. Did I miss something simple here and just bad at math or is the equation wrong?