HP Prime: Isolate a variable in an equation
12-20-2013, 10:34 PM
Post: #1
 Davidro Junior Member Posts: 21 Joined: Dec 2013
HP Prime: Isolate a variable in an equation
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
12-20-2013, 10:58 PM
Post: #2
 CR Haeger Member Posts: 275 Joined: Dec 2013
RE: HP Prime: Isolate a variable in an equation
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.
12-20-2013, 11:00 PM
Post: #3
 Helge Gabert Senior Member Posts: 467 Joined: Dec 2013
RE: HP Prime: Isolate a variable in an equation
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?
12-21-2013, 01:26 AM
Post: #4
 Davidro Junior Member Posts: 21 Joined: Dec 2013
RE: HP Prime: Isolate a variable in an equation
(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
12-21-2013, 02:01 AM
Post: #5
 Helge Gabert Senior Member Posts: 467 Joined: Dec 2013
RE: HP Prime: Isolate a variable in an equation
You need to type in lower case variables.
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