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| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 1 year, 4 months |
| seen | Apr 14 at 15:55 | |
| stats | profile views | 722 |
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Mar 13 |
answered | On the meaning of the second derivative |
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Mar 6 |
comment |
How does one work backwards from an infinite series to a function? This seems to reduce to simply finding the closed form of a series. That can't be answered in general because many different techniques exist for many different series. |
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Mar 6 |
comment |
Principal $n$th root of a complex number Wikipedia says that it may be chosen in a variety of ways: "A principal root of a complex number may be chosen in various ways." |
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Feb 20 |
comment |
A few definite integrals @Michael, indeed. Have a good day. |
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Feb 20 |
answered | A few definite integrals |
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Feb 20 |
revised |
A few definite integrals latex |
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Feb 5 |
comment |
Is there a way to solve $x^2 + 12y - 12x = 0$ for $x$? As it stands, it can be further simplified: $$6\pm \sqrt{-12y+36}=6\pm \sqrt{4(-3y+9)}=6\pm 2\sqrt{-3y+9}.$$ |
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Feb 4 |
revised |
Why does $i^2 = -1$? latex'd it |
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Feb 3 |
answered | estimation of limit / reducing of limit |
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Feb 3 |
comment |
Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? Your skill of exposition is beautiful. |
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Feb 3 |
accepted | Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? |
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Feb 3 |
comment |
Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? Is this a very precise way of mathematically qualifying the statement that 'length' and 'cardinality' are two very different concepts? |
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Feb 2 |
comment |
Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? Thank you all for your help. I understand now. |
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Feb 2 |
comment |
Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? Could someone clarify on what the phrase "homeomorphism of the usual topologies" means? I did not understand that. |
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Feb 2 |
comment |
Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? So, @ABlumenthal, $f$ is a bijection from $[a,b]$ to $[0,1]$ with $a<b$ and $a,b\in \mathbb{R}$? Hence, the two sets are of equivalent cardinality? |
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Feb 2 |
asked | Is $\left|\left[\frac{1}{7,000,000,000},1\right]\right|<\left|[0,1]\right|$? |
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Jan 26 |
awarded | Analytical |
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Jan 26 |
awarded | Informed |
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Jan 25 |
answered | In the expression sqrt(“cat”), what is the formal name of “cat”? |
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Jan 25 |
accepted | What is the limit of a sequence defined recursively as $x_1=2$, $x_{n+1}=1/(3-x_n)$ with $n \in \mathbb{N}$, and how do I prove it exists? |
