mathguy

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51 Answers

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8	How to divide using addition or subtraction
6	How come there is only one solution to $\sqrt{110-n} = n$
4	If $x$ and $y$ are prime , which of the following cannot be their sum
4	$f(n)=$ how many times number $2$ appears in numbers from $1$ to $n$
4	sequences from the positive integer numbers $(a,b,c,d,e)$

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1,388 Reputation

+50	Why is $2\pi i \neq 0?$
+10	$f(n)=$ how many times number $2$ appears in numbers from $1$ to $n$
+10	How many numbers between 1 and 10,000,000 don't have the sequence 12? Inclusion-exclusion problem
+2	Solving $(2x-1)\ln5=\ln2 + x\ln3$ for $x$

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9 Questions

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17	How can you explain the Singular Value Decomposition to Non-specialists?
10	Why is $2\pi i \neq 0?$ [duplicate]
4	Incremental approach of calculating the Singular Value Decomposition
2	In an N-dimensional space filled with points, systematically find the closest point to a specified point
1	Is the point at $(0,0)$ of the graph $z=x^3 + y^3$ considered a saddle point?

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46 Tags

24 homework × 18	9 elementary-number-theory × 5
16 combinatorics × 8	8 geometry × 6
14 probability × 11	7 functions × 3
12 algebra-precalculus × 5	5 trigonometry × 4
10 arithmetic × 2	4 puzzle × 2

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