Properties 3 and 4 leads to a nice relationship between the logarithm and exponential function. This is a nice fact to remember on occasion. We will be looking at this property in detail in a couple of sections. We will just need to be careful with these properties and make sure to use them correctly.

The right one is apparently dominant elsewhere: Please tell us how you were taught these or other layouts, where and when.

Most of the "action" takes place under the dividend in this example. Either layout is thoroughly confusing to grown-ups who were taught the other way as kids!

OnMary Neerhout Borg Oregon asked: The order in the English layout above left is consistent with the idiom "5 goes into [29 times]". Help from our readers: OnBiniam Girma wrote: This is how we learn to divide in Ethiopia. In a mathematical context, the answer to either question is definitely yes.

A trapezoid British English: If its other two sides happen to be also parallel, the trapezoid trapezium happens to be also a parallelogram. Common usage may differ from the above because lexicographers, dictionaries, and the general public often exclude from a general category some common subcategories.

Mathematicians, however, are much better off considering that among many other similar examples: Although you may be able to get away with the opposing view at the most elementary level, it is poor mathematics to do so.

The lexicographers in charge of putting together general dictionaries often fail to consider the above facts. You would not use the term "ellipse" unless the shape failed to be circular Mathematical discourse, on the other hand, tries to issue general statements theorems applicable in the least particular set of circumstances: Nearly anything that is true of an ellipse is also true of a circle, and that is why mathematicians consider the circle to be a special type of ellipse.

In the rare case when a theorem involving ellipses does not apply to circles, we must say so explicitely. A sphere is a special type of spheroid.

Ultimate argument, for lexicographers: The meaning of a word is ultimately revealed by its usage. Look at the word "in a sentence" so to speak, rather than put it on a pedestal and describe whatever prejudices you may have about its meaning. For the word "trapezoid", you may want to consider a description of the trapezoid method for approximating integrals: For a smooth enough function f, this area is adequately approximated by using the so-called trapezoid method: Consider an increasing finite sequence xn of points starting at a and ending at b.

Does this make the above description invalid? Do you suggest that we should even mention that the trapezoid could in fact be a rectangle or a square? Still not convinced about how pervasive inclusive concepts are in regular mathematical discourse?

Look again at the meaning of other words in the above description of the trapezoid method. We talked about an "approximation" to the integral, but we certainly did not mean to exclude the special case where this approximation happens to be the exact value, did we? Do you want to even mention such cases?

Does this bother you? Are there exceptions to this rule? Scientific concepts are as inclusive as they can be, unless a word is used whose etymology implies exclusion.

This may happen even in reputable textbooks, especially when the vocabulary is introduced incidentally. Jason of Canajoharie, NY. An sided polygon is an hendecagon.

Terms like "undecagon" and "duodecagon" have sometimes appeared to denote polygons with 11 or 12 sides.

These are macaronic terms namely, terms built from a mixture of different languages, like Greek and Latin and they should be avoided.[Studyplan] CSAT Aptitude Paper 2: Maths & Data Interpretation-High priority topics, Sample Questions, free studymaterial (part 2 of 3) Subscribe Aptitude 96 Comments 4 years Ago.

Several important formulas, sometimes called logarithmic identities or logarithmic laws, relate logarithms to one another.. Product, quotient, power, and root. The logarithm of a product is the sum of the logarithms of the numbers being multiplied; the logarithm of the ratio of two numbers is the difference of the logarithms.

After understanding the exponential function, our next target is the natural logarithm.. Given how the natural log is described in math books, there’s little “natural” about it: it’s defined as the inverse of e^x, a strange enough exponent already. How much money will you have when you retire?

How much money should you deposit into your account each month in order to have $10, in five years? Thinkwell's Trigonometry with Professor Edward Burger. Thinkwell's Trigonometry has high-quality online video lessons and step-by-step exercises that teach you what you'll need to be successful in Calculus.

Introduction Quadrature signals are based on the notion of complex numbers and perhaps no other topic causes more heartache for newcomers to DSP than these numbers and their strange terminology of j operator, complex, imaginary, real, and pfmlures.com you're a little unsure of the physical meaning of complex numbers and the j = √-1 operator, don't feel bad because you're in good company.

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