Leonardo

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seen May 10 at 7:32
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28 Posts

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Apr
10
 asked How can I determine the values of a third point to make all 3 collinear in $\mathbb{R}^3$
Apr
7
 asked What does it mean to be proportional to something?
Apr
6
 asked Find all values of $a$ such that $w = ai- \frac{a}{3}j$ is a unit vector
Apr
6
 asked Solve binomial expression with a variable under a square root?
Mar
12
 asked How might one go about proving this poorly worded theorem about divisibility with the number 3?
Feb
26
 asked Can we have a matrix whose elements are other matrices as well as other things similar to sets?
Feb
26
 asked Is this a correct proof for this relation?
Feb
26
 asked Is the relation on the positive integers defined by $(x,y) \in R$ if $x = y^2$ only antisymmetric?
Feb
22
 asked Does there exist any elements which I can add to a Relation such that the Relation remains Sym/Anti, Trans, and Reflexive?
Feb
19
 asked Prove that $f(n) = n^2 - 1$ is not injective and not surjective. Am I doing it right?
Feb
5
 asked How does one select some $i$ to prove $\exists i$ s.t. $s_i \leq A$ where $A$ is the average of real numbers $(s_1 + s_2 + . . . + s_n) / n$
Feb
5
 asked Advice? homework: $\forall x,y \in \mathbb{R}, x \in \mathbb{Q} \land y \notin \mathbb{Q} \implies (x + y) \notin \mathbb{Q}$
Jan
26
 asked How would one prove that $\sqrt{n}$ is the largest divisor that needs to be checked to determine if $n$ is prime?
Jan
25
 asked If I am checking for $s$ divides $n$ on the interval $S = [3, n-x]$, how large can I make $x$ to ensure I have verified $n$ is prime?
Jan
22
 asked Have I justified that $\forall x \in \mathbb{R}$, $x > 1 \rightarrow x^2 > x$
Jan
15
 asked Is the set $\{1\}$ a member, and not a subset of the power set of $\{1, 2\}$?
Jan
15
 asked Is my answer correct to this homework involving sets?
Jan
15
 asked Can you show why zero divided by zero does not equal zero?
Jan
14
 asked Is it more practice and intuition or rather algorithmic to solve third degree polynomials of this type?
Jan
14
 asked The author of my book simplifies his solutions to an extent that I am uncomfortable with, so are my solutions to homework over doing it?
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