MATHS FORMULAE Flashcards
1
Q
Circumference of circle
A
circumference = 2πr
2
Q
Area of circle
A
πr 2
3
Q
Surface area of cuboid
A
2(bh + bl + hl)
4
Q
Volume of cuboid
A
hbl
5
Q
Mean
A
6
Q
percentage change =
A
7
Q
% yield =
A
8
Q
% error (uncertainty)
A
9
Q
magnification
A
10
Q
Rf
A
11
Q
rate =
A
12
Q
(Surface Area to Volume ratio )
ratio =
A
13
Q
proportion of polymorphic gene loci
A
14
Q
cardiac output =
A
heart rate × stroke volume
15
Q
Respiratory quotient RQ
A
16
Q
Microorganism population growth
N =
A
17
Q
Efficiency of biomass transfers
efficiency=
A
18
Q
Temperature coefficient (Q10)
A
19
Q
Student’s t-test – Unpaired
A
20
Q
Student’s t-test – Paired
A
21
Q
Chi squared
A
22
Q
Spearman’s Rank Correlation Coefficient
A
23
Q
Standard Deviation
A
24
Q
Sd = Standard deviation (difference).
A
25
The Hardy-Weinberg Equations
26
Simpson’s Index
27
multiplicative rule
28
division rule
29
power rule
30
reciprocal rule
31
root rule
32
In mathematical terms, this graph can be expressed as:
y=
mx +c
m is the gradient of the graph, and c is the value of the intercept on the y-axis.
33
A graph showing a horizontal line parallel to the x-axis shows that the variable plotted on the y-axis is independent of the variable plotted on the x-axis. In mathematical terms, this relationship can be expressed as
34
A non-horizontal straight line shows that the variable plotted on the y-axis is proportional to the variable plotted on the x-axis, or
y∝x
In mathematical terms, this graph can be expressed as: y=mx +c
35
A curved graph that passes through the origin indicates that the variable plotted on the y-axis is proportional to a power of the variable plotted on the x-axis that is greater than 1, or
y∝x^n wheren>1
36
Logarithms are basically powers. If we take the following calculation: 10^2 = 100
this can be expressed as
the power of 10 that gives 100 is 2
or in formal notation log10 100 = 2
and we usually drop the 10 as it is assumed to be base 10 unless stated otherwise: log 100 = 2
37
Water Potential
38
Simpson’s Index of Diversity states:
