I found this guide for a temperature sensing circuit design with NTC thermistor by Texas Instruments.
According to my opinion, optimum R1 value is calculated so that the voltage divider can provide the widest voltage variation at its output for the given resistance range of the NTC thermistor.
In the Design Step 1 they have used this equation to calculate R1 of the voltage divider.
Here minimum and maximum values of the resistance range of the NTC thermistor are used.
Can this equation always be used as a general equation when designing voltage dividers for similar applications? Is this equation is a standard one and how is it derived, at what situations this equation should not be used?