Magic Maths

2017年08月21日 剑桥考试语言辅导


If you love English a little, it will love you more. If you hate it, it will turn around.

Guys, can you guess what these words mean? (tip: read their examples and then explanation)


Glossary of Mathematics

  1. base n: the number of unique digits (including zero) that a positional numeral system uses to represent numbers, e.g. base 10 (decimal) uses 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 in each place value position; base 2 (binary) uses just 0 and 1; base 60 (sexagesimal, as used in ancient Mesopotamia) uses all the numbers from 0 to 59; etc

  2. algebraic expression: a combination of numbers and letters equivalent to a phrase in language, e.g. x2 + 3x - 4

  3. algebraic equation: a combination of numbers and letters equivalent to a sentence in language, e.g. y = x2 + 3x - 4

  4. coefficients: the factors of the terms (i.e. the numbers in front of the letters) in a mathematical expression or equation, e.g. in the expression 4x + 5y2 + 3z, the coefficients for xy2 and z are 4, 5 and 3 respectively

  5. coordinate plane: a plane with two scaled perpendicular lines that intersect at the origin, usually designated x(horizontal axis) and y (vertical axis)

  6. ellipse: a plane curve resulting from the intersection of a cone by a plane, that looks like a slightly flattened circle (a circle is a special case of an ellipse)

  7. factor: a number that will divide into another number exactly, e.g. the factors of 10 are 1, 2 and 5

  8. formula: a rule or equation describing the relationship of two or more variables or quantities, e.g. A = πr2

  9. function: a relation or correspondence between two sets in which one element of the second (codomain or range) set ƒ(x) is assigned to each element of the first (domain) set x, e.g. ƒ(x) = x2 or y = x2 assigns a value to ƒ(x) or y based on the square of each value of x

  10. hyperbola: a smooth symmetrical curve with two branches produced by the section of a conical surface


 



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