数学公式的英语读法
来源：网络 2009-08-27 11:23:44
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there exist | |
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for all | |
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p implies q / if p, then q | |
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p if and only if q /p is equivalent to q / p and q are equivalent | |
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2.Sets |
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x belongs to A / x is an element (or a member) of A | |
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x does not belong to A / x is not an element (or a member) of A | |
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A is contained in B / A is a subset of B | |
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A contains B / B is a subset of A | |
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A cap B / A meet B / A intersection B | |
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A cup B / A join B / A union B | |
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A minus B / the diference between A and B | |
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A cross B / the cartesian product of A and B | |
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3. Real numbers |
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| x+1 | x plus one | |
| x-1 | x minus one | |
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x plus or minus one | |
| xy | xy / x multiplied by y | |
| (x - y)(x + y) | x minus y, x plus y | |
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x over y | |
| = | the equals sign | |
| x = 5 | x equals 5 / x is equal to 5 | |
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x (is) not equal to 5 | |
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x is equivalent to (or identical with) y | |
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x is not equivalent to (or identical with) y | |
| x > y | x is greater than y | |
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x is greater than or equal to y | |
| x < y | x is less than y | |
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x is less than or equal to y | |
| 0 < x < 1 | zero is less than x is less than 1 | |
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zero is less than or equal to x is less than or equal to 1 | |
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mod x / modulus x | |
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x squared / x (raised) to the power 2 | |
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x cubed | |
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x to the fourth / x to the power four | |
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x to the nth / x to the power n | |
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x to the (power) minus n | |
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(square) root x / the square root of x | |
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cube root (of) x | |
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fourth root (of) x | |
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nth root (of) x | |
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x plus y all squared | |
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x over y all squared | |
| n! | n factorial | |
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x hat | |
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x bar | |
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x tilde | |
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xi / x subscript i / x suffix i / x sub i | |
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the sum from i equals one to n |
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4. Linear algebra |
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the norm (or modulus) of x | |
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OA / vector OA | |
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OA / the length of the segment OA | |
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A transpose / the transpose of A | |
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A inverse / the inverse of A | |
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5. Functions |
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fx / f of x / the function f of x | |
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a function f from S to T | |
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x maps to y / x is sent (or mapped) to y | |
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f prime x / f dash x / the (first) derivative of f with respect to x | |
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f double-prime x / f double-dash x / the second derivative of f with respect to x | |
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triple-prime x / f triple-dash x / the third derivative of f with respect to x | |
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f four x / the fourth derivative of f with respect to x | |
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the partial (derivative) of f with respect to x1 | |
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the second partial (derivative) of f with respect to x1 | |
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the integral from zero to infinity | |
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the limit as x approaches zero | |
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the limit as x approaches zero from above | |
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the limit as x approaches zero from below | |
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log y to the base e / log to the base e of y / natural log (of) y | |
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log y to the base e / log to the base e of y / natural log (of) y |
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