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CforLinux
  • Member for 3 years, 2 months
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5 votes
2 answers
95 views

strong completeness of a formal system

4 votes
2 answers
269 views

Proving uniform convergence of $\sum_{n=1}^{\infty}a_n\cos{nx}$ in $\mathbb{R}$

4 votes
2 answers
65 views

Linear independence of a set of vectors + orthonormal basis

4 votes
3 answers
37 views

calculate $\sum_{n=0}^\infty \frac{3^n}{n!(n+3)}$ using power series

3 votes
2 answers
81 views

Proving single solution of initial value problem is increasing

2 votes
3 answers
194 views

Proving a language is not regular using the pumping lemma

2 votes
0 answers
38 views

$(M\models \Sigma_1\cup\Sigma_2)\leftrightarrow((\Sigma_1\rightarrow\alpha\wedge\Sigma_2\rightarrow\beta)\rightarrow M\models\alpha\wedge\beta)$

2 votes
0 answers
91 views

deductive system where the axioms are all the propositions that are not tautology

2 votes
1 answer
102 views

Prove $\forall_x(P(x)\rightarrow Q(x))\rightarrow (\exists_x P(x)\rightarrow \exists_x Q(x))$ is a tautology

2 votes
2 answers
178 views

Prove uniqueness of solution in ODE

2 votes
1 answer
26 views

Solving homogeneous third order ODE that becomes inhomogeneous second order ODE with constant

2 votes
1 answer
75 views

prove that partial derivative is independent from a variable

2 votes
1 answer
49 views

prove or disprove that $\sum (a_{2n-1} + a_{2n}) = a_1 + \sum (a_{2n} + a_{2n+1}) = S \Longrightarrow \sum a_n = S $

2 votes
1 answer
42 views

probability of N same type pairs from a heterogeneous group

2 votes
0 answers
44 views

Shared probability function of a discrete random variables

1 vote
3 answers
131 views

Variance and expected value of $2^X$

1 vote
1 answer
93 views

finding big theta notation with recursion and nlg(n)

1 vote
1 answer
73 views

The probability a survey participant is watching a certain channel(s)

1 vote
1 answer
477 views

probability when taking candies out of a jar

1 vote
1 answer
94 views

Number of options to distribute $N$ different balls to $K$ numbered cells

1 vote
1 answer
124 views

calculating limits using Maclaurin series

1 vote
1 answer
34 views

proving function is not continuous at a point using Cauchy definition of continuity

1 vote
4 answers
52 views

proving the inequality $n \cdot a^{n-1} \cdot(b-a) < b^n - a^n < n \cdot b^{n-1} \cdot (b-a)$

1 vote
1 answer
71 views

Evaluate $\int_{-\pi/4}^{\pi/4} \frac{x^7}{\cos^2 (x)} \,\rm{d}x$

1 vote
2 answers
103 views

Probability when choosing beads with repetitions

1 vote
1 answer
30 views

Probability that N cells of a $K\times K$ table hold the value 1

1 vote
1 answer
35 views

prove that $\lim_{n\to\infty} \int_a^b |f(x) - f_n(x)|^p dx =0$ for every $p>0$

1 vote
2 answers
172 views

is $f(x,y)=(\sqrt[3]{x} + \sqrt[3]{y})^3$ Differentiable at $P=(0,0)$

1 vote
0 answers
36 views

Proving an ODE's coefficients are constants

1 vote
0 answers
41 views

Proving a first order ODE solution is convex