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0answers
15 views

Visualize and define a vector space without dot / inner product

I'm trying to rebase my know how in linear algebra, restart from scratch to get a more formal and useful set of definitions to help me with computer programming stuff . One of the first concepts is a ...
2
votes
1answer
75 views

Solution to set of three equations

I have the following three equations: $$\cos\theta \left(\cos\psi - k_3\sin\psi\right) = k_1$$ $$\sin\phi\sin\theta\cos\psi - \cos\phi\sin\psi - k_3\left(\cos\phi\cos\psi + ...
0
votes
2answers
273 views

Solution to a system of symmetric equations

After applying the Lagrange multiplier method, I got the following system of equations, which is quite symmetric: $(x+y)^2 + (x+z)^2 = \frac{2}{3} \lambda x$ $(y+x)^2 + (y+z)^2 = \frac{2}{3} \lambda ...
1
vote
4answers
82 views

Solving a set of 3 Nonlinear Equations

In the following 3 equations: $$ k_1\cos^2(\theta)+k_2\sin^2(\theta) = c_1 $$ $$ 2(k_2-k_1)\cos(\theta)\sin(\theta)=c_2 $$ $$ k_1\sin^2(\theta)+k_2\cos^2(\theta) = c_3 $$ $c_1$, $c_2$ and $c_3$ are ...
3
votes
2answers
392 views

Checking if a System of Polynomial Equations is Consistent

I'm trying to determine whether any solutions exist to a system of $(n+1)$ polynomial equations in $n$ unknowns. For example: $$ \begin{align*} xy&=-2\\ x^2-1&=0\\ y^3-3y^2+2y&=0 ...
4
votes
1answer
210 views

Do the momentum conservation equations have a unique solution?

In high energy physics, one often encounters conservation of momentum and energy equations of the following form: $$\begin{array}{rcr} \sum_i (-1)^{\alpha_i}\sqrt{k_i^2 + m_i^2} = 0 \\ \sum_i ...
0
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0answers
210 views

4th degree nonlinear simultaneous equations with 3 unknowns

What method should be used to solve the following nonlinear simultaneous equations for $z_1, z_2, z_3$ $$a_2z_1^2 + a_1z_2^2 - (z_1z_2 \tan(t))^2 - z_1z_2 2b_1/\cos(t)^2 = b_1/\cos(t)^2 - a_1a_2$$ ...