Recent content by Gavran

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    Why Are You Still Here? A Curious Question

    “Dum vivimus, discimus” or “While we live, we learn”
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    High School Area of Overlapping Squares

    This is my interpretation of the problem statement in the original post.
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    Undergrad Erroneously finding discrepancy in transpose rule

    The transposition of a complex number is the same complex number, and the conjugation of a real matrix is the same real matrix. It is obvious that the transposition of a complex number corresponds to the conjugation of its 2×2 matrix representation. ##...
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    Undergrad Erroneously finding discrepancy in transpose rule

    The conjugation of a complex number is also a complex number. So the conjugation of a complex number twice corresponds to the transposition of its 2×2 matrix representation twice.
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    Undergrad Trigonometry problem of interest

    There is an interesting text regarding degrees versus radians on https://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/. The next picture illustrates in a simple way when to use degrees and when to use radians for measuring angles.
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    Einstein vs Newton - Who is your favorite and why?

    I do not know what you are trying to say here. If you want to take any step in your life, first you have to be born.
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    Einstein vs Newton - Who is your favorite and why?

    Isaac Newton was a great physicist, and he was also a great mathematician, which made him more independent than Albert Einstein. My final answer is Isaac Newton.
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    Undergrad Erroneously finding discrepancy in transpose rule

    There is an isomorphism between the field of complex numbers and a specific set of 2x2 real matrices where a complex number ## a+bi ## is mapped to the 2x2 matrix ## \begin{pmatrix}a&-b\\b&a\end{pmatrix} ##. The conjugation of a complex number corresponds to the transposition of its 2x2 matrix...
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    High School More similar triangle problems

    All right. Based on post #19, there are the next steps. $$ \frac{d}{d\phi}(8+\frac{8}{\tan\phi}+2\tan\phi)=0\implies(-\frac{8}{\tan^2\phi}+2)\cdot\sec^2\phi=0\implies $$ $$ -\frac{8}{\tan^2\phi}+2=0\implies\tan^2\phi=4\implies\tan\phi=\pm2\implies\phi=\pm63,435^\circ $$ ##...
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    High School More similar triangle problems

    I suppose that you use the Pythagorean theorem here. (see below) $$ \sqrt{(a+2)^2+(b+4)^2}=\sqrt{b^2+2^2}+\sqrt{a^2+4^2}\implies0=0 $$ So, there is not a unique solution. The minimum of ## S ## where $$ S=8+\frac{8}{\tan\phi}+2\tan\phi $$ you can find by equating the first derivative ##...
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    Einstein vs Newton - Who is your favorite and why?

    And what is your answer? Einstein or Newton? Please choose one, not both of them.
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    Which one is correct statement regarding lightning?

    When we speak about electrostatic induction, we speak in the context of charges of regions of the object, not in the context of charges of the overall object. The object can be neutral, but its charges cannot be evenly distributed. The polarization in this case is caused by what you have...
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    Einstein vs Newton - Who is your favorite and why?

    Newton His work was the groundwork for later discoveries.
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    Engineering Disasters

    Top three: Chernobyl, the Bhopal Disaster, and the Titanic.