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Symboles communs d'opérations

Publié : Le 07 Décembre 2005 à 16:19
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Article vu : 1 498 fois
SYMBOL EXAMPLE MEANING IN FULL + u+v u plus v v u v minus u...
SYMBOL EXAMPLE MEANING IN FULL
+ u+v u plus v
- v-u v minus u
. 3.141 three point one four one
= 1 tonne=1000kg one tonne equal to one thousand kilogrammes
$ ne $ x$ne $y x does not equal y
$ times $ mass $ times $ velocity mass multiplied by velocity
$ div $ 8$ div $2 eight divided by two
/ 20 km/h twenty kilometers per hour
$ equiv $ 1mm vertical$ equiv $5N one millimetre vertical is equivalent to five newtons
$simeq$ 60km/h$simeq$17m/s sixty kilometres per hour is approximately equal to seventeen meters per second
$propto$ stress$propto$strain stress is proportional to strain
: 2:1 two to one
% 0.4% zero point four per cent
$sqrt$ $sqrt5$ the square root of five
$^3$ $3^3$ three cubed
$^4$ $10^4$ ten to the power four
> >18mm greater than eigthteen millimetres
< <25mm less than twenty five millimetres
$ge$ $ge$30mm greater than or equal to thirty millimetres
$pm$ $pm$5kg plus or minus five kilogrammes
° 50° fifty degrees
     
     
     
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