01-25-2018, 09:09 AM

01-25-2018, 09:26 AM

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

X=9, Y=-4

Salvo

01-25-2018, 10:20 AM

Not to forget the Linear Solver App, you simply enter your 6 numbers and push Solve.

Arno

Arno

01-25-2018, 10:48 AM

(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!

01-25-2018, 10:58 AM

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-

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

[attachment=5592]

-Dale-

01-25-2018, 11:12 AM

01-25-2018, 11:25 AM

(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...

01-26-2018, 08:41 AM

solve({13*x+5*y=97,x^2+y^2=97},{x,y})