Recent content by LordCalculus

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    High School Inverse of b mod n: Find, Steps, Examples

    What's the basic procedure in finding the inverse of b modulo n? What are the steps? Say, for example, the inverse of 5 modulo 7.
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    Graduate What Is the P-adic Volume of the P-adic Circle x² + y² = 1?

    I'm not even sure what a p-adic number is. The professor handed out this sheet for us to "enjoy." It's not collected or anything. It's just for us - for fun. This was one of the questions on the sheet, and it doesn't elaborate on it at all. So I have no idea if it's a finite area.
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    Graduate What Is the P-adic Volume of the P-adic Circle x² + y² = 1?

    Find the p-adic volume of the p-adic circle x^2 + y^2 = 1. This isn't hw.
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    Undergrad Logic: Difficulty for Students vs Analysis & Algebra

    Do most students find it more difficult than analysis and abstract algebra?
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    Undergrad Can a bijection be extended to three dimensions?

    Can the definition of a bijection be extended to three dimensions? So for example, f(a, b) = c, where f : N X N \rightarrow N
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    High School Can absolute value functions be considered polynomial functions?

    Are lx3l or lxl3 polynomials? If not, what would be a good example of a cubic polynomial function (R \rightarrow R) that doesn't cover all real numbers in its codomain?
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    Undergrad Monotone functions and injections.

    Are all monotone functions injective?
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    High School How to Write the Result of a Squared Summation Notation After Multiplication?

    How would I write the result of this in summation notation after multiplying it out? (\sum^{n}_{i=1} x_{i})^{2}
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    Blackbody radiation calculation problem

    Blackbody radiation problem! Homework Statement The average person has 1.4 m^2 of skin at a skin temperature of roughly 306 K. Consider the average person to be an ideal radiator standing in a room at a temperature of 293 K. a.) Calculate the energy per second radiated by the average person...
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    Deriving Vr and V(sub-theta) from Kepler's second law and

    Not far at all. I don't even know where to begin. If you do, then please start me off. Thanks!
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    Deriving Vr and V(sub-theta) from Kepler's second law and

    Deriving Vr and V(sub-theta) from Kepler's second law and... Homework Statement Beginning with r=[a(1-e2)]/(1+e*cos \theta) and Kepler's second law, derive general expressions for vr and v\theta for a mass m1 in an elliptical orbit about a second mass m2. The final answers should be...