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| bio | website | mymathforum.com |
|---|---|---|
| location | United States | |
| age | 70 | |
| visits | member for | 2 years, 2 months |
| seen | 9 hours ago | |
| stats | profile views | 2,127 |
If I speak with the tongues of men and of angels, ...
If I know all mysteries and all knowledge, ...
If I have all faith, so as to remove mountains, but do not have love,
I am nothing.
I hereby commit to contributing to this site without any rudeness, sarcasm, accusation, or any other unloving speech.
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22h |
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Definition(s) of rational numbers There's a deep issue here, possibly about the embedding of the integers in the rationals. In one sense, we cannot say "$3=\dfrac{3}{1}$", since $3$ is just a singleton. Right?? There is an identification of integers with rationals: $n$ in Z --> $(n,1)$ in Q |
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1d |
awarded | Constituent |
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May 13 |
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Finding a reccurence relation for the following problem Thanks again, Rootaku. I flagged the question, but it was declined, with a request for a "link to [the plagiarized question]". Not sure how I am supposed to provide a link to something that is not available online. Oh well. |
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May 13 |
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Properties matrix $A^2=I$ Val seems to be interpreting Andreas' hint as a description of all such matrices that satisfy the given condition. Clearly, Andreas is providing insight into the general case with a simple example. |
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May 12 |
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Product of numbers How did you factor $x^2+8x+7$? |
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May 12 |
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Solving $(2x-1)\ln5=\ln2 + x\ln3$ for $x$ For posterity: "user77356" used the handle "MIT Romney", and a picture of Mitt Romney; "user60725" was "Barac Obama", with the man's picture. 'twas quite strange... |
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May 11 |
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Solving $(2x-1)\ln5=\ln2 + x\ln3$ for $x$ What the %^+# is going on here?!? |
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May 9 |
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Solving Recursions like this First you solve the homogeneous version (without the $3n+1$), using the characteristic equation. |
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May 9 |
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Linear Equations; How to Write an Equation From Given Coordinates Did you figure it out? The slope is $\dfrac{7-1}{2-0} = 3$... |
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May 8 |
answered | Linear Equations; How to Write an Equation From Given Coordinates |
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May 8 |
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Find the following integral: $\int {{{1 + \sin x} \over {\cos x}}dx} $ That's a well-formed question. |
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May 8 |
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Finding a reccurence relation for the following problem Sadly, I'm not totally sure. There should be a way to rollback to previous content. Thanks! |
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May 8 |
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Can you prove if $5^n \mid r$ and $r$ odd then $5^{n+1} \mid 2^r+3^r$? I think you can always vote on answers to your questions... |
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May 7 |
awarded | Informed |
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May 7 |
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Can you prove if $5^n \mid r$ and $r$ odd then $5^{n+1} \mid 2^r+3^r$? @CuriousMike: You can also show appreciation for answers by clicking the arrows in the top left corner. |
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May 7 |
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How do you calculate the rate of change of the volume of a cone at a given height and radius I would add: Just to make sure it is clear, $x'$ is the derivative of x with respect to t, that is - $$x'=\dfrac{dx}{dt}$$ |
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May 7 |
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Function Notation Bobby, note the difference between the two arrows used in this answer. |
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May 7 |
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Function Notation The name of the function is f. The value of the function f, at the point $x$, is $f(x)$ |
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May 7 |
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Infinite irrational number sequences? Also a possible duplicate of math.stackexchange.com/questions/96632/… |
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May 7 |
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A Nim variant: Number of stones Well have you worked out a few simple examples to see what general pattern might hold? |
