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标题: 你能用英语说出这些数学符号么?  
 
jojo
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你能用英语说出这些数学符号么?

+        plus ;positive
-        minus ;negative
×        multiplied by ;times
÷        divided by
=        equals
≈        approximately equals
≠        not equal to
<        less than
>        greater than
≤        equal to or less than  
≥        equal to or greater than o
(   )        round brackets ;parentheses
[   ]        square brackets
{   }        braces
∈        is a member of the set
⊂        is a subset of
∽        similar to
≌        congruent to
*        denotes an operation
∴        therefore
∵        because
∶        ratio sign, divided by, is to
∷        equals, as(proportion)

square root of

cube root of
∥        parallel to
⊥        perpendicular to, at right angles with
∠        angle
∟        right angle
º        degree
′        minute
″        second
⊙        circle
A⁀B        arc AB
e        the base of natural logarithms,approx.2.71828
x!        factorial x, x(x-1)(x-2)---1
lognx        log x to the base n
π        pi
lnx        log x to the base e(natural logarithm)
lgx        log x to the base 10(common logarithm)
|x|        the absolute value of x




hello, everyone
2006-2-27 21:45#1
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