datanewb
 Name:
 James B
 School:
 UTK
 About:
 I regret not taking any math courses in college.
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0 
Questions Asked

datanewb:
Group Title
In the lecture video on Eigenvalues (Lecture 21), at 31:00 Strang says the 2x2 rotation vector Q is \[Q = \begin{bmatrix}
\cos{90} & \sin …
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

datanewb:
Group Title
Help getting started with the indefinite integral
\[\int \frac{2 \, dx}{\sqrt{16  x^2}} =\]
 updated one year ago
 4 replies
 1 Medal
Mathematics

datanewb:
Group Title
\[y = \frac{uu^{1}}{2} \]
How do I solve for u?
 updated one year ago
 3 replies
 2 Medals
Mathematics

datanewb:
Group Title
Question regarding a summation equality: \[\sum_{k=0}^n n(n1)\dotsb(nk+1) \leq \sum_{k=0}^n n^k \]
 updated one year ago
 3 replies
 1 Medal
Mathematics

datanewb:
Group Title
Help figuring out the formula for \[\frac{d}{dx}(x^x)\].
I think I'm close.
 updated one year ago
 10 replies
 2 Medals
Mathematics

datanewb:
Group Title
Trying to adjust this equation so that it will have fatter tails?\[3^{\left(\frac{x}{6}\right)^{2}} \] Any ideas? It is similar to the pro…
 updated 2 years ago
 15 replies
 1 Medal
Mathematics

datanewb:
Group Title
Which version of Python will you install?
 updated 2 years ago
 7 replies
 3 Medals
Mathematics

datanewb:
Group Title
Is this MOOC class designed for completely inexperienced programmers?
 updated 2 years ago
 13 replies
 2 Medals
Mathematics

datanewb:
Group Title
Help understanding notation for second derivative:
\[\frac{d^2y}{dx^2}\]
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

datanewb:
Group Title
Help with a series
\[\sum_{i=0}^{\infty}\left(\frac{1}{2}\right)^i\]
…
 updated 2 years ago
 12 replies
 3 Medals
Mathematics

datanewb:
Group Title
Oil spreads on a frying pan so that its radius is proportional to t^(1/2), where t represents the time from the moment when the oil is poure…
 updated 2 years ago
 6 replies
 No Medals Yet
Mathematics

datanewb:
Group Title
Related rates 2 E4: Sand is pouring on a conical pile at 12m^3/min. The diameter of the base is always 3/2 the height. Find the rate at whi…
 updated 2 years ago
 11 replies
 1 Medal
Mathematics

datanewb:
Group Title
In the assignments, when a question references a number, where can that reference be found? Example and link below...
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

datanewb:
Group Title
Show that \[\frac{y^2+2y+2}{y^22y+2}\] is a natural number if y is a natural number.
 updated 2 years ago
 9 replies
 3 Medals
Mathematics

datanewb:
Group Title
In statistics what do these two phrases mean?
\[RV X : \Omega \rightarrow \mathbb{R}\] and \[P(Z \Epsilon A)\] I'll explain the parts I und…
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

datanewb:
Group Title
Help understanding the solution to question 2A5.
http://ocw.mit.edu/courses/mathematics/1801scsinglevariablecalculusfall2010/parta…
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

datanewb:
Group Title
Help intuiting an algebraic manipulation:
(6 + x)^n/6^n = (1 + x/6)^n
 updated 2 years ago
 6 replies
 2 Medals
Mathematics

datanewb:
Group Title
How to find the \[ \sum_{i = 0}^{n}i^2 \]...
that is the sum of i^2 for values i = 0 > n? Is there a trick for this or must each term be …
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

datanewb:
Group Title
Does these matrices have real or imaginary eigenvalues?
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

datanewb:
Group Title
Having trouble with Example 4 from page 320. I'll post the full example and my specific question below.
 updated 2 years ago
 4 replies
 1 Medal
Mathematics

datanewb:
Group Title
Where can I find statistics video lectures in similar quality to the OCW video lectures?
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

datanewb:
Group Title
Relatively quick question concerning ordinary least squares explanation from wikipedia. Explanation below:
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

datanewb:
Group Title
What does it mean to raise a vector to the power 2/5? Example below.
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

datanewb:
Group Title
For question 15 of section 6.1, page 295 of the text, it asks for two other lambdas (eigenvalues) for the permutation matrix P. All P's hav…
 updated 2 years ago
 5 replies
 1 Medal
Mathematics

datanewb:
Group Title
I've just started the Eigenvector section. In Example 1(p. 284) the answer given for the first Eigenvector is (.6 , .4). However, it seems …
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

datanewb:
Group Title
Find two vectors that form a basis for the plain represented by the equation x + 2y + 3z = 0.
 updated 2 years ago
 10 replies
 1 Medal
Mathematics

datanewb:
Group Title
How does one calculate the coefficient of determination for the least squares approximation? In the book and lectures, the error vector e =…
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics