MHB Solving for Y in c=2x^2-xy+2y^2

  • Thread starter Thread starter shle
  • Start date Start date
shle
Messages
4
Reaction score
0
Hi, I am trying to solve for Y in the equation:

c = 2x^2 - xy + 2y^2

Thank you!
 
Mathematics news on Phys.org
shle said:
Hi, I am trying to solve for Y in the equation:

c = 2x^2 - xy + 2y^2

Thank you!

It's a quadratic in $y$. Do you know how to solve such problems?
 
Google "The quadratic formula" or "completeing the square"
 

Thread 'What Exactly is Dirac’s Delta Function? - Insight'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
View full post »

Thread 'Fermat's Last Theorem'

Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...
View full post »
Thread 'Imaginary Pythagorus'

Thread 'Imaginary Pythagorus'

I posted this in the Lame Math thread, but it's got me thinking. Is there any validity to this? Or is it really just a mathematical trick? Naively, I see that i2 + plus 12 does equal zero2. But does this have a meaning? I know one can treat the imaginary number line as just another axis like the reals, but does that mean this does represent a triangle in the complex plane with a hypotenuse of length zero? Ibix offered a rendering of the diagram using what I assume is matrix* notation...
View full post »

Similar threads

MHB Challenge problem #1 Solve 2x^2y^2−2xy+x^2+y^2−2x−2y+3=0
Replies
4
Views
1K
MHB Prove Inequality: $x^2y\,+\,y^2z\,+\,z^2x \ge 2(x\,+\,y\,+\,z) - 3$
Replies
2
Views
1K
MHB How Can I Solve This Bilinear Integer Equation?
Replies
3
Views
2K
MHB Solving System of Equalities: x^2-y\sqrt xy & y^2-x\sqrt xy =3
Replies
2
Views
1K
MHB [ASK] A Line Intercepting A Circle
Replies
4
Views
1K
MHB Solving System of Equations: xy, yz, zx
Replies
3
Views
1K
MHB Which Equation Represents a Line Parallel to 3y-1=2x?
Replies
5
Views
3K
MHB Solve System of Equalities: x^2+xy+y^2, x^2+xz+z^2, y^2+yz+z^2
Replies
7
Views
1K
MHB Solving Trig Identity: Sin[1/2 sin^−1 (x)] = 1/2 X (sqr(1+x) –sqr(1-x))
Replies
2
Views
1K
MHB Is it possible to solve such a system of equations?
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top