.. Ante Christum .
alternating current
a.m. ante meridiem .
B.C. before Christ
BTU British Thermal Unit -
Centigrade ( )
cubic centimetre
cckw counter clockwise
cwt hundredweight ; (50,8 45,3 )
dc direct current
deg. degree
e.g. exsempli gratia .
e.m.f. electromotive force
etc. et cetera - . ..
Fahr. (F) Fahrenheit
f.p.s feet per second
ft. foot; feet ()
gal. gallon
gr gram(me)
h (hr) hour
hp horsepower
i.e. id est .
kv kilovolt
kva kilovolt-ampere -
kw kilowatt
lb libra pound .
m metre ; mile ; minute
mm millimetre
m.p.h. miles per hour
p. page
p.c. pro centum . per cent
p.m. post meridiem .
psi pounds per square inch
R Reaumur
r.p.m. revolutions per minute
r.p.s. revolutions per second
sq. square
t. temperature ; ton
viz videlicet .
vs versus .
v.v. vice versa .
w watt
9
+ plus
minus
plus or minus
= is equal to, equals
* does not equal
S identical, identically equal to
~ equivalent, similar (is similar to)
> is greater than
< is less than
-> approaches
Oo varies as, is propotional to
Oo infinity
ab a times b; a multiplied by b
a/b the ratio of a to b; a divided by b
proportion: a is to b as is to d
an the -th power of a; aaa... to n factors
J~ radical sign
yfa square root of a
a~n the reciprocal of an\ \/an
log a common logarithm of a
log 10 a logarithm of a to the base 10
In a natural logarithm of a
F(x), f(x) function of x
= f(x) is a function of x
the derivative of |
Dydf(x)
dx with respect to x £ the second derivative of dx2 with respect to x a' lei] prime, dash |
dx'
fl"[ei] second, double prime, double dashed
an [ei] sub n, subscribed n
\ integral sign
double integral
() parentheses
[ ] brackets
{ } braces
LCM (1cm) least common multiple
GCD (gcd) greatest common divisor
Z angle
L right angle
J_ perpendicular (is perpendicular to)
| | parallel (is parallel to)
triangle
parallelogram
□ square
|
|
circle
arc; (arc AB)
0 degrees (of arc or angle)
' minutes of arc or angle; foot, feet
" seconds (of arc or angle); inches
sin A sine of A
cos A cosine of A
tan A tangent of A
cot A (or ctn A) - cotangent of A
sec A secant of A
cosec A (or esc A) cosecant of A
A few examples of reading mathematical expressions
Arithmetic
Addition 12 + 13 = 25 Twelve plus thirteen is (masks equals) twenty-five addend sum
Subtraction 71 24 = 47 Seventy one minus twenty four is (equals) forty-seven
minuend subtrahend remainder, difference -
Multiplication 8 x 6 = 48 Six times eight is forty-eight (eight multiplied by six is forty-eight) multiplicant multiplier (factor) product
Division 90: 9 = 10 Ninety divided by nine is ten
divident divisor quotient
Fractions Decimal fractions 0.4 nought point four (0 [eu]point four) |
Common fractions
a half (one second); - a quarter
2 4
(one forth)
2- (2 3 v nator) 5- (5 3 v nator) |
Proper fractions
- numerator, 3 denomi-
Improper fractions
- numerator, 3 denomi-
1 2 5s 7- (9 3 9 tor) |
Mixed number
common denomina-
0.06 nought point nought six (0 [eu] point 0 [eu] six)
.2 point two (period two, two tenth)
.37 point thirty seven (period thirty-seven)
652.47 six hundred fifty-two point forty seven (six five two point forty-seven)
1.007 one point 0 [eu] 0 [eu] seven
Power
raise to a power
in the second power ,
in the third power ,
in the n-th power -
3 3 cubed (three to the third power)
2 three a to the second power (3 coefficient; a base; 2 exponent)
Evolution
J~ square root (radical sign) ~ cubic root
V4 = 2 the square root of four is
Two
Ratio
H
ratio H per L; H to L
jLi
=f(x) is a. function of x
, the derivative of with
Dx dx
respect to x
d2y
ir the second derivative of
djc2
with respect to x
One; a unit single; once