Maths Formulae Flashcards
1
Q
Quadratic Formula
A
b^2 -4ac
2
Q
Area of a triangle
A
0.5ab sinC
3
Q
sin2x
A
2sinxcosx
4
Q
cos2x (both)
A
cos^2 x - sin^2 x
5
Q
cos2x (cosx)
A
2cos^2 x -1
6
Q
cos2x (sinx)
A
1- 2sin^2 x
7
Q
tan2x
A
(2tanx)/(1-tan^2 x)
8
Q
Arclength of a sector
A
rθ
9
Q
Area of a sector
A
0.5r^2 θ
10
Q
Arithmetic Single
A
a+(n-1)d
11
Q
Geometric Single
A
ar^(n-1)
12
Q
Derivative of x^n
A
nx^(n-1)
13
Q
Derivative of e^nx
A
ne^(nx)
14
Q
Derivative of ln(x)
A
1/x
15
Q
Derivative of a^x
A
a^(x) lna
16
Q
Derivative of sinx
A
cosx
17
Q
Derivative of cosx
A
-sinx
18
Q
Diferrentiation Product Rule uv
A
vu’ + uv’
19
Q
Differentiation Quotient Rule u/v
A
(vu’ - uv’)/v^2
20
Q
Integral of x^n
A
(x^n+1)/(n+1) +c
21
Q
Integral of e^nx
A
(1/n)e^(nx) +c
22
Q
Integral of sinx
A
-cosx +c
23
Q
Integral of cosx
A
sinx +c
24
Q
Integral of a^x
A
(a^x)/(lna) +c
25
Connected Particles dy/dx =
(dy/dT) / (dT/dx)
26
Probability P(B/A)
P(AnB)/P(A)
