hkBattousai

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bio	website	stirve.com
	location	Turkey
	age	33
visits	member for	1 year, 5 months
	seen	2 days ago
stats	profile views	85

Electronics engineer.

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34 Questions

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8	Solving matrix equations of the form $X = AXA^T + C$
5	Could we show $1-(x-\dfrac{x^3}{3!}+\dfrac{x^5}{5!}-\dots)^2=(1-\dfrac{x^2}{2!}+\dfrac{x^4}{4!}- \dots)^2$ if we didn't know about Taylor Expansion?
4	What is the proof that covariance matrices are always semi-definite?
3	Probability of two buses being in a bus stop at the same time
3	What is the method of solving an equation set in which the unknowns are in denominator?

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725 Reputation

+40	Find all real numbers $x$ for which $\frac{8^x+27^x}{12^x+18^x}=\frac76$
+5	Solving matrix equations of the form $X = AXA^T + C$
+2	L1 penalty can serve as a convex surrogate for an L0 penalty. Why?
+5	How do I factorize equations of the form $x^2 + Bxy + Cy^2 = 0$

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23 Answers

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8	Using Taylor's Theorem to show that $\ln(1 + x^2) \leq x^2$
7	How to check if a point is inside a rectangle?
6	Unusual 5th grade problem, how to solve it
4	Find all real numbers $x$ for which $\frac{8^x+27^x}{12^x+18^x}=\frac76$
3	Is it morally right and pedagogically right to google answers to homework?

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67 Tags

8 algebra-precalculus × 9	7 computational-geometry
8 taylor-expansion × 2	6 diophantine-equations × 2
8 calculus	6 elementary-number-theory
8 analysis	4 contest-math
7 analytic-geometry	2 powers × 4

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