datanewb
 Name:
 James B
 School:
 UTK
 About:
 I regret not taking any math courses in college.
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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 one year ago
 15 replies
 1 Medal
Mathematics

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

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

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

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

datanewb:
Group Title
Help intuiting an algebraic manipulation:
(6 + x)^n/6^n = (1 + x/6)^n
 updated one year 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 one year ago
 7 replies
 1 Medal
Mathematics

datanewb:
Group Title
Does these matrices have real or imaginary eigenvalues?
 updated one year 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 one year 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 one year ago
 2 replies
 No Medals Yet
Mathematics

datanewb:
Group Title
Relatively quick question concerning ordinary least squares explanation from wikipedia. Explanation below:
 updated one year 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 one year 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 one year 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 one year 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 one year 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