Search results
Results from the WOW.Com Content Network
In March 2016, Barnes & Noble Education enlarged their Digital Student Solutions online services division by acquiring LoudCloud Systems, a digital platform and analytics provider to clients in higher education, the for-profit sector, and K-12 segment. [19] In August 2017, Barnes & Noble Education acquired Student Brands for $58.5 million. [20]
In August 2010, concurrently with introducing a web-based textbook rental service, Barnes and Noble—"one of the largest textbook retailers in the US" [59] —introduced the NOOK Study app "for the PC or Mac that lets users buy or rent e-book versions of their textbooks for use on the computer. [60]
The rules describe how to form strings from the language's alphabet that are valid according to the language's syntax. A grammar does not describe the meaning of the strings or what can be done with them in whatever context—only their form. The Backus-Naur form, used to describe the syntax of programming languages, applies similar concepts. [223]
Brute-force algorithms to count the number of solutions are computationally manageable for n = 8, but would be intractable for problems of n ≥ 20, as 20! = 2.433 × 10 18. If the goal is to find a single solution, one can show solutions exist for all n ≥ 4 with no search whatsoever.
A Binomial distributed random variable X ~ B(n, p) can be considered as the sum of n Bernoulli distributed random variables. So the sum of two Binomial distributed random variables X ~ B(n, p) and Y ~ B(m, p) is equivalent to the sum of n + m Bernoulli distributed random variables, which means Z = X + Y ~ B(n + m, p). This can also be proven ...
In mathematics, an n th root of a number x is a number r (the root) which, when raised to the power of the positive integer n, yields x: = ⏟ =.. The integer n is called the index or degree, and the number x of which the root is taken is the radicand.
In elementary algebra, the binomial theorem (or binomial expansion) describes the algebraic expansion of powers of a binomial.According to the theorem, the power (+) expands into a polynomial with terms of the form , where the exponents and are nonnegative integers satisfying + = and the coefficient of each term is a specific positive integer ...
The general form of its probability density function is [2] [3] = (). The parameter μ {\textstyle \mu } is the mean or expectation of the distribution (and also its median and mode ), while the parameter σ 2 {\textstyle \sigma ^{2}} is the variance .