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Andrew Kor's user avatar
Andrew Kor's user avatar
Andrew Kor's user avatar
Andrew Kor
  • Member for 8 years, 9 months
  • Last seen more than 3 years ago
6 votes
4 answers
2k views

Mathematical Difference between "there is one" and "there is EXACTLY one"

3 votes
2 answers
2k views

Proof by contradiction/contrapositive

2 votes
1 answer
722 views

Rules of inference help?

2 votes
1 answer
126 views

(Pumping Lemma for Regular Languages) Is this proof that L is not regular?

1 vote
1 answer
15 views

How to write the General solution of the homogeneous system with complex entries in the Eigan vectors in terms of real functions?

1 vote
1 answer
57 views

A homogeneous differential equation. Solving by substitution: $\frac{dy}{dx} = \frac{y-x}{y+x}$

1 vote
3 answers
46 views

Finding particular solution to non-homogeneous DE: $y''-y'+\frac{1}{4}y = 3 + e^\frac{x}{2}$

1 vote
2 answers
323 views

How do you use the Undetermined coefficients method for solving this non-homogeneous DE?

1 vote
2 answers
1k views

Double integrals - Find the volume of the solid bounded by the graphs of the given equations

1 vote
1 answer
3k views

How to prove premise-conclusion statements with rules of inference?

1 vote
1 answer
266 views

Converting arguments into propositions

1 vote
2 answers
13k views

How to prove this logical equivalence?

1 vote
1 answer
2k views

What does this logic question mean?

1 vote
0 answers
74 views

What really is $0^0$? [duplicate]

1 vote
1 answer
485 views

Difference between $F_X(x)$ and $F(x)$ in probability?

1 vote
2 answers
864 views

How do I go about finding the $log$ function that passes through 2 points?

1 vote
1 answer
1k views

Is this enough to prove that the language L is not context-free? (Pumping lemma for CFL's)

0 votes
2 answers
43 views

Which is the correct equation for estimating sample variance?

0 votes
3 answers
486 views

Prove that the language L is not a regular language, using pumping lemma

0 votes
3 answers
195 views

How to prove if this is a logical equivalence?

0 votes
0 answers
94 views

Linear Algebra: Linear combinations

0 votes
2 answers
113 views

How to prove arguments with rules of inference?

0 votes
3 answers
596 views

How to solve this non-linear differential equation using the substitution $u = y'$?

0 votes
2 answers
53 views

How do you solve a differential equation like $\frac{dy}{dx} = tan^2(x + y)$?

-1 votes
3 answers
6k views

Expressing "there is exactly one" [duplicate]

-1 votes
2 answers
104 views

Uncountable sets

-2 votes
2 answers
106 views

Disprove why 0 ∉ Z [closed]