Solve for X and Y
01-25-2018, 09:09 AM
Post: #1
 Hamada-77 Junior Member Posts: 7 Joined: Dec 2017
Solve for X and Y
hello
how can i solve this two equations with Hp prime ?
Need to solve for X and For Y .
Thank you

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01-25-2018, 09:26 AM
Post: #2
 salvomic Senior Member Posts: 1,366 Joined: Jan 2015
RE: Solve for X and Y
You can use the app Solve, then (in Symb) write the equations in E1 and E2; in Num give some guess tries for X and Y and press Solve:

X=9, Y=-4

Salvo

∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C - DM42 WP34s :: Prime Soft. Lib
01-25-2018, 10:20 AM
Post: #3
 Arno K Senior Member Posts: 432 Joined: Mar 2015
RE: Solve for X and Y
Not to forget the Linear Solver App, you simply enter your 6 numbers and push Solve.
Arno
01-25-2018, 10:48 AM
Post: #4
 salvomic Senior Member Posts: 1,366 Joined: Jan 2015
RE: Solve for X and Y
(01-25-2018 10:20 AM)Arno K Wrote:  Not to forget the Linear Solver App, you simply enter your 6 numbers and push Solve.
Arno

Right, yes!

∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C - DM42 WP34s :: Prime Soft. Lib
01-25-2018, 10:58 AM
Post: #5
 DrD Senior Member Posts: 1,113 Joined: Feb 2014
RE: Solve for X and Y
You could use a graphical approach, using the Advanced Graphing App. The two solutions show up nicely at the intersections of the two expressions:

Points (X,Y) = (4,9) and (9,-4)

[attachment=5592]

-Dale-
01-25-2018, 11:12 AM
Post: #6
 Arno K Senior Member Posts: 432 Joined: Mar 2015
RE: Solve for X and Y
(01-25-2018 10:48 AM)salvomic Wrote:
(01-25-2018 10:20 AM)Arno K Wrote:  Not to forget the Linear Solver App, you simply enter your 6 numbers and push Solve.
Arno

Right, yes!

No, I was wrong, did not enlarge that pic, so I did not see that the second equation is quadratic.
Arno
01-25-2018, 11:25 AM
Post: #7
 salvomic Senior Member Posts: 1,366 Joined: Jan 2015
RE: Solve for X and Y
(01-25-2018 11:12 AM)Arno K Wrote:  No, I was wrong, did not enlarge that pic, so I did not see that the second equation is quadratic.
Arno

and I was wrong two times, then, replying too soon
ok, the second equation is not linear...

∫aL√0mic (IT9CLU), HP Prime 50g 41CX 71b 42s 12C 15C - DM42 WP34s :: Prime Soft. Lib
01-26-2018, 08:41 AM
Post: #8
 SMaus Junior Member Posts: 4 Joined: May 2014
RE: Solve for X and Y
solve({13*x+5*y=97,x^2+y^2=97},{x,y})
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