 HP Prime: Isolate a variable in an equation - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: HP Prime: Isolate a variable in an equation (/thread-184.html) HP Prime: Isolate a variable in an equation - Davidro - 12-20-2013 10:34 PM Hello friends: How to isolate a variable in an equation on HP Prime? Can anyone guide us? Searched the Guide and not found. Thank You David RE: HP Prime: Isolate a variable in an equation - CR Haeger - 12-20-2013 10:58 PM I'm not an expert but I tend to use the solve() command in CAS mode. For example Solve(x+y=4,y) should return 4-x. Good luck. RE: HP Prime: Isolate a variable in an equation - Helge Gabert - 12-20-2013 11:00 PM In CAS view, solve() should be of help. E.g., solve(x^2-4*y*x=3,y) returns {(-x^2+3)/(4*x)} Or solve(x^2-4*y*x=3,x) returns {2*y+-sqrt(4*y^2+3)} Is that what you are after? RE: HP Prime: Isolate a variable in an equation - Davidro - 12-21-2013 01:26 AM (12-20-2013 10:58 PM)CR Haeger Wrote:  I'm not an expert but I tend to use the solve() command in CAS mode. For example Solve(x+y=4,y) should return 4-x. Good luck. Thanks friends: That's what I need. But, using this command with different variables X and Y, appears a recommendation that doesn't work either. Another observation is that the result is not symbolic when the variables are different from X and Y. Grateful David RE: HP Prime: Isolate a variable in an equation - Helge Gabert - 12-21-2013 02:01 AM You need to type in lower case variables.