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sat数学 公式总结

2013-07-17 15:12     作者 :    

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     SAT数学考试并不需要考生记忆数学公式,对于一些常用的简单公式都会列在试卷的前面。但是对于一些可以帮助大家解题的小公式,大家还是了解记忆一些比较有好处。下面为大家搜集了这样的SAT数学公式,供大家参考。

1.Logic
 
?there exist
 
?for all
 
p?q p implies q / if p, then q
 
p?q p if and only if q /p is equivalent to q / p and q are equivalent
 
2.Sets
 
x∈A x belongs to A / x is an element (or a member) of A
 
x?A x does not belong to A / x is not an element (or a member) of A
 
A?B A is contained in B / A is a subset of B
 
A?B A contains B / B is a subset of A
 
A∩B A cap B / A meet B / A intersection B
 
A∪B A cup B / A join B / A union B
 
A\B A minus B / the diference between A and B
 
A×B A cross B / the cartesian product of A and B
 
3. Real numbers
 
x+1 x plus one
 
x-1 x minus one
 
x±1 x plus or minus one
 
xy xy / x multiplied by y
 
(x-y)(x+y) x minus y, x plus y
 
= the equals sign
 
x=5 x equals 5 / x is equal to 5
 
x≠5 x (is) not equal to 5
 
x≡y x is equivalent to (or identical with) y
 
x>y x is greater than y
 
x≥y x is greater than or equal to y
 
x≤y x is less than or equal to y
 
0≤x≤1 zero is less than or equal to x is less than or equal to 1
 
|x| mod x / modulus x
 
x2 x squared / x (raised) to the power 2
 
x3 x cubed
 
x4 x to the fourth / x to the power 4
 
xn x to the nth / x to the power n
 
x (?n) x to the (power) minus n
 
x的平方根(square) root x / the square root of x
 
x的三次根cube root (of) x
 
x的四次根fourth root (of) x
 
x的n次根nth root (of) x
 
(x+y)2 x plus y all squared
 
n! n factorial
 
x^x hat
 
xˉ x bar
 
x? x tilde
 
xi xi / x subscript i / x suffix i / x sub i
 
Σ(i=1~n) ai the sum from i equals one to n ai / the sum as i runs from 1 to n of the ai
 
4. Linear algebra
 
‖x‖the norm (or modulus) of x
 
OA→OA / vector OA
 
OAˉ OA / the length of the segment OA
 
AT A transpose / the transpose of A
 
A?1 A inverse / the inverse of A
 
5. Functions
 
f(x) fx / f of x / the function f of x
 
f:S→T a function f from S to T
 
x→y x maps to y / x is sent (or mapped) to y
 
f’(x) f prime x / f dash x / the (first) derivative of f with respect to x
 
f”(x) f double-prime x / f double-dash x / the second derivative of f with respect to x
 
f”’(x) triple-prime x / f triple-dash x / the third derivative of f with respect to x
 
f (4) (x) f four x / the fourth derivative of f with respect to x
 
?f/?x1 the partial (derivative) of f with respect to x1
 
?2f/?x12 the second partial (derivative) of f with respect to x1
 
∫0∞ the integral from zero to infinity
 
limx→0the limit as x approaches zero
 
limx→0+the limit as x approaches zero from above
 
limx→0?the limit as x approaches zero from below
 
logey log y to the base e / log to the base e of y / natural log (of) y
 
lny log y to the base e / log to the base e of y / natural log (of) y
    以上就是新航道小编为大家整理的sat数学 公式总结的详细内容,希望对大家有所帮助,更多资讯、资料请访问新航道sat频道http://www.xhd.cn/sat/

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