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8h |
answered | How many ways to combine two sets so that order of each set is preserved. |
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9h |
comment |
How to solve this simultaneous equation of $3$ variables. Are $a,b,c$ given? What are the dots-just for spacing?, $x=a,y=b,z=c$ looks easy to find. One would expect five more solutions. |
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9h |
comment |
Two questions on clock arithmetic @Shahab: Sorry, I had $a$ and $b$ backwards. Try this. |
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9h |
revised |
Two questions on clock arithmetic correct |
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10h |
answered | Two questions on clock arithmetic |
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11h |
reviewed | Approve suggested edit on Confused about Eigenvectors |
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11h |
comment |
Accumulation points of accumulation points of accumulation points @MartinArgerami: if $A=\{1/2,1/4,1/8,\ldots\}$, $A'=\{0\}$. The closure of $A$ is the union of these. |
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23h |
reviewed | Approve suggested edit on How do I solve this solution-mixing problem? |
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23h |
comment |
property of function We are taking the derivative with respect to $x$, not $n$. There is no derivative of $n+1$ Also no function is differentiable at a discontinuity. You are correct that a large class of functions, continuous in both $x$ and $n$ satisfy this. |
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23h |
answered | property of function |
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23h |
answered | Digit Sums: A Math Project |
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1d |
reviewed | Approve suggested edit on A question regarding the Poisson distribution |
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1d |
comment |
Does Euler totient function gives exactly one value(answer) or LEAST calculated value(answer is NOT below this value)? @vish213: The graph in Wikipedia shows that $\phi(n)$ can range essentially from $\frac {4n}{15}$ to $n$, depending on $n$, but it has only one value for a given $n$. |
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1d |
answered | Does Euler totient function gives exactly one value(answer) or LEAST calculated value(answer is NOT below this value)? |
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1d |
answered | Finding Area of a shape |
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1d |
reviewed | Approve suggested edit on Equivalence classes |
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1d |
answered | Equivalence classes |
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1d |
reviewed | Approve suggested edit on How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$ |
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1d |
comment |
Show that a vector that is orthogonal to every other vector is the zero vector Your title has the implication reversed from the body question. Please fix it or confirm and I will. |
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1d |
comment |
Find Total number of ways out of N Number taking K numbers every M interval @PulkitSharmaz: That was supposed to be $K=1$ in the last comment. I said I didn't know what to do for $K \gt 1$, but guessed that if $K$ divides evenly into $M$ we could use the same approach-space the C's with $\frac MK-1$ o's and then the number of choices will be to select which o's to delete. For $M=3,K=2$ I have no idea, because the sides of the C's interact. |
