Recent content by SafiBTA

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    A question regarding the definition of e

    Homework Statement In writing the definition of ##e## i.e. ##e=\displaystyle\lim_{n\rightarrow\infty}(1+\frac{1}{n})^n##, why do we denote the variable by 'n' despite the fact that the formula holds for n∈(-∞,∞)? Is there any specific reason behind this notation i.e. does the variable have...
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    How are integration skills tested on GRE Mathematics Subject Test?

    Although it gets better with experience, integrating an expression by hand is a really a trial and error procedure. A wrong substitution will get you nowhere in the available time. So I am wondering as to how they test your integration skills on GRE Mathematics Subject Test. Any help would be...
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    Can a function have a local max but no global max?

    Homework Statement I need to confirm if I correct in saying the following: If f(x) is a function having the domain [a,b) as shown in the figure, then f(x) has several local maxima but none of them is global maximum, and f(x) does not have a global maximum. Homework Equations and...
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    Queries regarding Inflection Points in Curve Sketching

    Homework Statement Let A be a set of critical points of the function f(x). Let B be a set of roots of the equation f''(x)=0. Let C be a set of points where f''(x) does not exist. It follows that B∪C=D is a set of potential inflection points of f(x). Q 1: Can there exist any inflection points...
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    Does (-2)^(⅔) have an imaginary component?

    Some calculators say (-2)2/3 is equal to ##-\frac{1}{2^\frac{1}{3}}+i\frac{3^\frac{1}{2}}{2^\frac{1}{3}}## while others say its equal to ##4^{\frac{1}{3}}## i.e. ##|-\frac{1}{2^\frac{1}{3}}+i\frac{3^\frac{1}{2}}{2^\frac{1}{3}}|##. I think I am right to imply from above that (-2)2/3 does have an...
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    Which Greek Letter is the Coolest? My Favorite is \xi

    Infinitesimal difference :DD.
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    Compound Interest Paid in 3.5 Years: Regional Laws & Concepts

    - This may be a stupid question as I am totally new to the concept of interest. I don't even know if my question is valid. - Figure is given below for referenceSuppose I deposit some money in a bank that pays compound interest on yearly basis. If I decide to withdraw my amount at the end of 3.5...
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    Can Self-Taught Physics Knowledge Truly Enhance Your Life?

    You can work towards a 1 year intensive diploma - http://diploma.ictp.it/application-admission/diploma-programme .
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    Can Self-Taught Physics Knowledge Truly Enhance Your Life?

    Stephen Wolfram (creator of Wolfram Mathematica) earned a PhD in theoretical physics before he completed his undergraduate. He had taught himself physics and was publishing papers at a very young age (13 as far as I remember [look it up!]). In college, he combined some of his papers into his PhD...
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    Which Greek Letter is the Coolest? My Favorite is \xi

    ##Δ## is what matters to me.
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    Ask a Stupid Quetion Get a Stupid Answer

    You can't really understand elementary particle behavior when your brain limited to classical mechanics. Please upgrade your brain to a quantum version :smile: You can start here: https://www.bulletproofexec.com/bulletproof-upgraded-brain-octane/ Considering the particle-wave duality theory...
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