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2:31 PM
Two new tags and were created by Harish Chandra Rajpoot.
2
Q: How to find the angle of a non right angled triangle in a cube?

Safwan AbrarI have to find $\angle MHN$ ($\angle H$ in $\Delta HMN$). It is inside a cube that has side lengths of $12$ cm. $M$ is the midpoint of the diagonal $BD$ and $N$ is the midpoint of edge $GF$. Here's the diagram: I'm completely lost on how I would find $\angle MHN$ because the triangle is skewed ...

 
 
4 hours later…
6:59 PM
A new tag was created bu SADBOYS.
0
Q: Bernstein generator function : $(1-x+y-ye^{\frac{u}{n}} + x e^{\frac{t}{n}})^n$

SADBOYSI have this "generator" function : $$ g(u,t) = \sum_{k=0}^{n} \sum_{i=0}^{k} \binom{n}{k} \binom{n-k}{i} x^k y ^i e^{\frac{kn}{t}} e^{\frac{un}{t}} = (1-x+y-ye^{\frac{u}{n}} + x e^{\frac{t}{n}})^n$$ And the Bernstein two-variable polynomial (in a triangular domain I think) : $$B_n(f,(x,y)) = \sum...

A new tag was created by ss1729.
3
Q: Easiest way to prove the Rouché–Capelli theorem

ss1729 Rouché–Capelli theorem (Kronecker–Capelli theorem/Rouché–Fontené theorem/Rouché–Frobenius theorem/Frobenius theorem) states that for the non-homogeneous system Ax = b, $(i)$ $Ax = b$ has a unique solution if and only if $rank[A] = rank[A|b] = n$ $(ii)$ $Ax = b$ is inconsistent (i.e., no solu...

The Rouché–Capelli theorem is a theorem in linear algebra that determines the number of solutions for a system of linear equations, given the rank of its augmented matrix and coefficient matrix. The theorem is variously known as the: Kronecker–Capelli theorem in Austria, Poland, Romania and Russia; Rouché–Capelli theorem in Italy; Rouché–Fontené theorem in France; Rouché–Frobenius theorem in Spain and many countries in Latin America; Frobenius theorem in the Czech Republic and in Slovakia. == Formal statement == A system of linear equations with n variables has a solution if and only if the rank...
 

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