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Apr
14
reviewed Reviewed Confidence Interval
Apr
13
comment Generating data for overdetermined least square problem
By consistent, I mean that Ax = b holds even though it is over-determined. Your approach generates a $b$ which is consistent with $A$. This is not typically the case for least squares problems.
Apr
13
comment Generating data for overdetermined least square problem
Do you need A and b to be consistent? What have you tried?
Mar
11
reviewed Approve suggested edit on Double Angle Formula?
Mar
8
reviewed No Action Needed What are the odds of a specific 5 digit combination appearing within an 8 digit combination of numbers in any order/any recurrences from 0-9.
Mar
8
reviewed Approve suggested edit on Why does the following nonlinear system have 21 solutions?
Mar
8
reviewed Approve suggested edit on Is the function $f(x,y) = \sin(\frac{r}{\theta}), f(0,0) = 0$ continous at the point $ (0,0)$?
Feb
27
reviewed Approve suggested edit on Let $T$ be a tree of order $n$. Why is the complement $\neg T$ of $T$ the same size as $K_{n-1}$?
Feb
26
comment Are orthogonal spaces exhaustive, i.e. is every vector in either the column space or its orthogonal complement?
@Ethan, Yes, you are correct that the union (in the formal sense) between the two subspaces is zero. I took the sense of your question at the end of the first paragraph "are there some vectors in $R^n$ which are in neither?" I thought that by using the term union, you intended span.
Feb
26
reviewed Reviewed Special function example
Feb
26
comment Are orthogonal spaces exhaustive, i.e. is every vector in either the column space or its orthogonal complement?
Yes, see this: en.wikipedia.org/wiki/Fundamental_theorem_of_linear_algebra
Feb
25
comment How To Generate Random Points on the Positive Side of a Plane in 3-D
See my second edit.
Feb
25
revised How To Generate Random Points on the Positive Side of a Plane in 3-D
added 594 characters in body
Feb
25
comment How To Generate Random Points on the Positive Side of a Plane in 3-D
This link tells you how to do it.
Feb
22
reviewed No Action Needed Infinite Sum with Combination
Feb
21
reviewed Edit Find the ratio of the area inside the square but outside the circle to the area of the square in the figure.
Feb
21
revised Find the ratio of the area inside the square but outside the circle to the area of the square in the figure.
deleted 18 characters in body
Feb
21
reviewed Close Backwards Recurrence
Feb
21
reviewed Approve suggested edit on Conic Sections Question - Hyperbolas & Circles
Feb
21
comment Integral of $e^{\overline{z}}$
Try using separate integrals over the top and bottom halves of the unit circle. I.e. one integral from $0$ to $\pi$ and another from $\pi$ to $2\pi$.