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4-Formylphenyl boronic acid crystallizes in colorless needles [1] or is obtained as an odorless, whitish powder, which dissolves little in cold but better in hot water. The compound is quite stable [3] and readily forms dimers and cyclic trimeric anhydrides, which complicate purification and tend to protodeboronize, a secondary reaction that occurs frequently in the Suzuki coupling, with ...
In probability theory and statistics, the Rademacher distribution (which is named after Hans Rademacher) is a discrete probability distribution where a random variate X has a 50% chance of being +1 and a 50% chance of being −1.
An example Karnaugh map. Note: Every rectangle encloses 2, 4 or 8 trues or 1's. Also, the yellows rectangle wraps off the top and encloses the two bottom right cells. A Karnaugh map (KM or K-map) is a diagram that can be used to simplify a Boolean algebra expression.
In the examples listed above, a nuisance variable is a variable that is not the primary focus of the study but can affect the outcomes of the experiment. [3] They are considered potential sources of variability that, if not controlled or accounted for, may confound the interpretation between the independent and dependent variables .
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Abdoulaye Doucoure scored the fourth-fastest goal in Premier League history — after just 10.18 seconds, according to the competition's statistic supplier, Opta — to set Everton on course for a ...
Ben Affleck and Jennifer Lopez spent some time together over the weekend after seeing each other over the holidays, but a source tells PEOPLE the former couple "are not getting back together ...
It is a polynomial in which no variable occurs to a power of or higher; that is, each monomial is a constant times a product of distinct variables. For example f ( x , y , z ) = 3 x y + 2.5 y − 7 z {\displaystyle f(x,y,z)=3xy+2.5y-7z} is a multilinear polynomial of degree 2 {\displaystyle 2} (because of the monomial 3 x y {\displaystyle 3xy ...