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15
Math.TechQA.Club
2026-04-14 17:06:27
26
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$C=\sum_{i=1}^{n} Z(X_{i}-\mu)Z^{T}$ . Find $Z$ if $X$ follows a bivariate normal distribution
Published on
14 Apr 2026 - 17:06
#matrices
#normal-distribution
#self-learning
#means
654
Views
How to compute value of this derivative at x=0
Published on
14 Apr 2026 - 15:57
#calculus
#soft-question
#self-learning
253
Views
Studying analysis 2 from Munkres and Spivak
Published on
12 Apr 2026 - 15:33
#calculus
#real-analysis
#analysis
#manifolds
#self-learning
184
Views
multiplying brackets containing vectors
Published on
16 Apr 2026 - 13:46
#linear-algebra
#vectors
#self-learning
420
Views
Definition: Basis of a topology
Published on
12 Apr 2026 - 12:13
#general-topology
#self-learning
55
Views
density of the product of two random variables
Published on
12 Apr 2026 - 10:16
#probability
#self-learning
356
Views
Is there a branch of mathematics that combines symplectic geometry and number theory?
Published on
26 Mar 2026 - 8:00
#number-theory
#self-learning
#symplectic-geometry
#research
63
Views
If $x$ is rational, $x\neq 0$, and y is irrational, prove that $x/y$ is irrational.
Published on
14 Apr 2026 - 19:22
#calculus
#real-analysis
#self-learning
#irrational-numbers
#rational-numbers
697
Views
Exercise: Limits, continuity and composition of functions from R to R
Published on
12 Apr 2026 - 17:38
#real-analysis
#proof-verification
#self-learning
284
Views
Spivak Calculus ed.3 chapter 3 problem 27 (a)
Published on
14 Apr 2026 - 8:41
#real-analysis
#algebra-precalculus
#self-learning
126
Views
How do decompose the skill "knowing linear algebra"?
Published on
09 Apr 2026 - 18:57
#linear-algebra
#self-learning
161
Views
General duplication formula $\sin\left(\sum_{i=1}^{n}x_i\right),~\cos\left(\sum_{i=1}^{n}x_i\right),~~and ~~\tan\left(\sum_{i=1}^{n}x_i\right)$
Published on
16 Apr 2026 - 4:51
#calculus
#algebra-precalculus
#trigonometry
#contest-math
#self-learning
1.2k
Views
Self learn calculus for uk a-levels?
Published on
12 Apr 2026 - 21:44
#calculus
#self-learning
623
Views
Properties of this argmin function
Published on
10 Apr 2026 - 13:28
#derivatives
#optimization
#self-learning
156
Views
Monotonicity in argmin function
Published on
11 Apr 2026 - 15:54
#real-analysis
#derivatives
#self-learning
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