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Some lists of common words distinguish between word forms, while others rank all forms of a word as a single lexeme (the form of the word as it would appear in a dictionary). For example, the lexeme be (as in to be ) comprises all its conjugations ( is , was , am , are , were , etc.), and contractions of those conjugations. [ 5 ]
The compilation excludes nouns, which comprise a separate 95-word list. According to Dolch, between 50% and 75% of all words used in schoolbooks, library books, newspapers, and magazines are a part of the Dolch basic sight word vocabulary; however, bear in mind that he compiled this list in 1936.
The Dale–Chall readability formula is a readability test that provides a numeric gauge of the comprehension difficulty that readers come upon when reading a text. It uses a list of 3000 words that groups of fourth-grade American students could reliably understand, considering any word not on that list to be difficult.
In particular, words relating to technology, such as "blog," which, in 2014, was #7665 in frequency [6] in the Corpus of Contemporary American English, [7] was first attested to in 1999, [8] [9] [10] and does not appear in any of these three lists. The Teachers Word Book of 30,000 words (Thorndike and Lorge, 1944)
Some math problems have been challenging us for centuries, and while brain-busters like these hard math problems may seem impossible, someone is bound to solve ’em eventually. Well, m aybe .
Among the exponential functions of the form α x, setting α = e 2/e = 2.0870652... results in a sharp upper bound; the slightly smaller choice α = 2 fails to produce an upper bound, since then α 3 = 8 < 3 2. In applied fields the word "tight" is often used with the same meaning. [2] smooth
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