things to remember Flashcards
1
Q
percentage change
A
[(final - original)/orginal] x 100
2
Q
new amount
A
orginal x (100 + or - rate/100)
3
Q
compound interest
A
original x (100 + rate%/ 100)^ no. of years
4
Q
formula for nth term
A
a + (n-1) d
5
Q
gradient
A
rise/run
6
Q
gradient of parallel lines are ….
A
equal
7
Q
gradient of parallel lines
A
m1 x m2 = -1
8
Q
midpoint
A
(x1+x2/2), (y1+y2/2)
9
Q
length of line joining points x1 and y1 and x2 and y2
A
l= square root of (x1- x2)^2 - (y1-y2)^2
10
Q
values that should be excluded from the domain
A
- values that makes the denominate 0
- range of values that give a negative seuqare root
11
Q
(a/b) ^- n =
A
(b/a)^n
12
Q
(a/b)^m/n
A
n square root (b/a) to the power of m
13
Q
turning point for max or min
A
0
14
Q
velocity
A
ds/dt
15
Q
acceleration
A
dv/dt
