Just a first vague idea for better usability now that we have two variables...
Not really sure yet if it really simplifies usability:
IS: Given listing formula like (A+B) * B * B, with B being known (e.g. 7), A unknown, you need to pre-solve the formula for given B or insert B three times
GOAL: What about just taking the formula as it is and selecting letter A range 0-9, letter B range 7 (one single value range), then pressing show button. Letters could be offered in dropdown depending on what is contained in the formula, to keep it faster than entering three times B manually.
I should take care not to destroy functions like exp, abs etc. if letters can be chosen freely instead of just x, y
Just a first vague idea for better usability now that we have two variables...
Not really sure yet if it really simplifies usability:
IS: Given listing formula like (A+B) * B * B, with B being known (e.g. 7), A unknown, you need to pre-solve the formula for given B or insert B three times
GOAL: What about just taking the formula as it is and selecting letter A range 0-9, letter B range 7 (one single value range), then pressing show button. Letters could be offered in dropdown depending on what is contained in the formula, to keep it faster than entering three times B manually.
I should take care not to destroy functions like exp, abs etc. if letters can be chosen freely instead of just x, y