MATHS SYMBOL CLASS FOR WAEC GCE 2014
tita u should know dat.
rais means raise to power
^means raise to power
sqr rut/ squar rut means square root
----(1)means equation 1
yr means year
f(x-xbar)means x MINUS x BAR as in statistics which means that MINUS WILL BE ON TOP OF x.
, (Comma)means NEXT LINE, THIS MEANS THAT THE FOLLOWING NUMBER IS UNDER THE NUMBER IT IS FOLLOWING i.e UNDER. It is usually used during STATISTICS when drawing a table.
DRAW A TABLE WITH X|FX|(FX-Xbar)
The above statement means that:
~For X, it has 1 2 3 4 5 6 under it. which means 1 is under 2, 2 is under 1, 3 is under 2, 4 is under 3 and so on...
~Under FX you have 4, then 6 under 4, then 8 under 6, then 10 under 8, then 12 under 10.....
~Under FX-Xbar you have 10, then 8 under 10, then 6 under 8, then 4 under 6, then 2 under 4, then 1 under 2....
IN A CLEARER WAY:
â†’ comma means NEXT LINE(e.g)
x : 1,2,3
fx : 4,5,6
fx-xbar : 10,8,6,4
1| 4 | 10 |
2| 6 | 8 |
3| 8 | 6 |
4| 10| 4 |
Class interval: 60-64,65-69,70-74,75-79,80-84,85-89,90-94,95-99.
F(x-x bar)2: 561.12,414.18,273.36,33.66,84.48,476.42,351.12,333.06
MEANING OF THE ABOVE EXPRESSION:
Bar means Minus on top of d number or Variable and comma means next line which means each of them are unda. Eg 60-64 is unda Class interval, then 65-69 is unda 60-64,etc .So comma means unda.
NOTE THAT WHEN U SEE SOMETHING LIKE THE ABOVE TWO EXAMPLES, U WILL NEED TO DRAW A TABLE..
YOU NEED TO KNOW THESE ALSO:
1) ,(comma) means next line.
x : 1,2,3
fx : 4,5,6
fx-xbar : 7,8,9
1| 4 | 7 |
2| 5 | 8 |
3| 6 | 9 |
3)^ = Riase to pwer
4)P also means raised to power eg 10P6 means 10 raised to power six.
5)log3(base 4) ..Note:the base must be SUBSCRIPT .
6)x bar = mean symbol(xÂ¯Â¯)
7)Pie = pie symbol eg Area of a circle is (Pie r2).
8)Tita = Î¸ eg SinÎ¸.
10)Root or Rut or Sqrt or sqr root = âˆš ; eg Root2 means âˆš2
11)/ means Â¡Ã‚
12)----(1) means equation 1
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