Revision Note - Math
Mutually Exclusive Events
Let $E$ and $F$ be two events. If $E$ and $F$ are mutually excl… Read
Parallelograms
- Definition: A quadrilateral with two pairs of parallel sid
Partial Variation
If $y$ is the sum of two parts, one part varies inversely as $x… Read
Percentage Changed
- Percentage increase $=\dfrac{\mbox{New value}-\mbox{O
Permutations
For $n$ different objects, if we select $r$ objects out of th… Read
Profit and Loss
- Profit $=$ Selling price $-$ Cost
- Profit percentage
$= \dfr
Properties of Parallel Lines
- Corresponding angles
Result: $a=b$
Reference: corr. $\an
Properties of Slope
- Parallel
For two straight lines $\ell_1$ and $\ell_2$ with
Quadratic Formula
For quadratic equation $ax^2+bx+c=0$, where $a$, $b$ and $… Read