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WindBreeze
  • Member for 5 years, 4 months
  • Last seen more than 2 years ago
8 votes
4 answers
1k views

Construct an A4 paper.

3 votes
1 answer
165 views

I don't understand how I can solve the dual of a linear programming model knowing the solution to the primal.

3 votes
3 answers
681 views

Why is the change of basis formula counter-intuitive? [See details]

2 votes
3 answers
61 views

How to find the correct orthogonal eigenvectors for a basis of an eigenvalue?

2 votes
1 answer
66 views

How to know if $\mathrm{Im} A = \mathbb R^n$ given a matrix?

2 votes
2 answers
120 views

Trying to understand antisymmetry

2 votes
1 answer
106 views

How to make a correct proof?

2 votes
2 answers
135 views

I'm asked to differentiate this $\dfrac{C}{2} \sum^{m}_{j' = 1} \| W^{j'} \|^{2}_{2}$ but I barely understand the notation.

2 votes
3 answers
375 views

How do we calculate the derivative of $f(x) = x^{3} - 3x$?

1 vote
0 answers
40 views

How to find the critical numbers for this?

1 vote
1 answer
70 views

Simplifying $\frac{\omega\sin(\omega t)\tan(\omega{t})+\omega(\cos(\omega t)+1)\sec^2(\omega t)}{(\cos(\omega t) +1)^2}$

1 vote
0 answers
27 views

Trouble identifying if we have a conditional probability problem or not.

1 vote
2 answers
171 views

How do you know that $\frac{dE( x) }{dp}=0$?

1 vote
1 answer
93 views

A bijection cannot be the composition of an injective and a surjective function

1 vote
1 answer
135 views

Unsure if the way I calculated the Maximum Likelihood estimator is correct.

1 vote
0 answers
26 views

How to prove that in the continuous case $E[m] = P(x \in S)$?

1 vote
2 answers
50 views

I need an explanation for this solution about solving a non-homogenous recurrence relation.

1 vote
1 answer
65 views

Why is the recurrence associated with $O(n \log n) \to 2f(n/2)+O(n)$?

1 vote
1 answer
107 views

How to prove that there is closure in NP for the reverse operation on strings?

1 vote
2 answers
143 views

Is the Var $(y_i) = E(y_i^2)$?

1 vote
0 answers
15 views

Can someone explain the proof for table expansion when we increase the expansion by tripling instead of doubling?

1 vote
1 answer
128 views

Finding if two sequence M and N are in the shuffle product of W and Z while not knowing W and Z

1 vote
3 answers
66 views

What to do in this case when applying the law of sinus? I get an error 2 message.

1 vote
1 answer
42 views

How to transform a regular expression into a context free grammar with 2 variables?

1 vote
1 answer
160 views

How to use the pumping lemma to prove that $a^{m}b^{n}a^{m}c^n$ is not context free?

1 vote
1 answer
25 views

Trouble finding correct basis of subspace defined with a linear equation.

1 vote
0 answers
37 views

How to find Kernel with [ A | 0 ] if dim Ker > 1?

1 vote
2 answers
85 views

How can I find the P matrix in $P^{-1}AP $= D?

1 vote
2 answers
204 views

Why does $B^{-1}(AB)B = BA = B(AB)B^{-1}$?

1 vote
2 answers
30 views

How to find the last step required for finding the Maximum Likelihood Estimator?