数学符号-希腊字母-公式英文发音和书写

êÆÎÒ! úª! F1i1 =ŠÖ{ÚÑ\•{
Copyright 2020 by Prof. Hailiang Xiong
2020 c 5 10 F
1 \~¦Ø
Symbol +
× · ÷ /
Speak plus or positive minus or negative multiplies or times
the fraction x squared over a squared plus the fraction y squared over b squared equals 1 a x squared plus b x y plus c y squared plus d x plus e y plus f equals zero
y prime f prime of x nth derivative with respect to x of y
y to the nth prime p prime or first derivative of p p double prime or second derivative of p partial derivative of u with respect to x or partial u over partial x a sub ij
18
F1i1 Ñ\•{
Symbol α δ η κ ν π τ χ
Code \alpha \delta
\eta \kappa
\nu \pi \tau \chi
Symbol β
θ λ ξ lon \theta \lambda
\xi \rho \upsilon \psi
7 “ê(1)
Expression a − (b − c) a − (−b − c)
a − (b + c) − d
ab
a · −b a(b + c) ab − c
Speak a minus the difference b minus c a minus the quantity minus b minus c a minus the quantity b plus c end of quantity minus d ab or a times b a times minus b a times the sum b plus c a b minus c
11 ;’‘p~Ñ êÆÎÒ
Expression σx σxy x µ µ2 µr β1 β2 η Q1 Q3
E(x) j(p)
Speak sigma sub x sigma sub x y x bar mu mu sub two mu sub r beta sub one beta sub two eta Capital q sub one Capital q sub three Capital e of x j sub p in parentheses
or divided by
1
2 ' $ŽÎ
Symbol =
= ≡ <
>
Speak equals or equal to does not equal or not equal is equivalent to less than much less than greater than much greater than
n column vector a sub one a sub two dot dot dot a sub n
7
14 Ù¦~^ Lˆª
Expression ∆y ∂y
dx dt
y f (x)
dny dxn y(x) p , p˙ p , p¨
∂u ∂x
aij
Speak capital delta y partial y derivative with respect to t of x
3 )Ò
Symbol ( ) [ ] { }
Speak open parenthesis or left parenthesis closed parenthesis or right parenthesis open bracket or left bracket closed bracket or right bracket open brace or left brace closed brace or right brace
9
16 F1ÎÒ
Œ
=©5Ñ ISÑI5Ñ ¥©5Ñ
A
α
alpha
a:lf
C{
Bβ
beta
bet
©
Γ
γ gamma
ga:m
³ê
Xχ
chi
kai
U
∆δ
delta
deta
©
E
epsilon
ep‘silon
MÊÜž
Hη
eta
eit
M©
I
ι
iota
iota
©
K
κ
kappa
kappa
kø
Λ λ lambda
lambda
product from i equals one to infinity of y sub i limit as x approaches a of y equals b limit as x approaches a minus of f of x integral of f of x d x
13 ‚5“ê¥ =©Ö{
6
12 p êÆp¡ A‡ÎÒ
Expression
N
1 ∞
xi
i=1
n
1 ∞
yi
i=1
lim y = b
x→a
lim f (x)
x→a−
f (x)dx
Speak summation from one to capital n summation from i equals one to infinity of x sub i product product from one to n
4
8 “ê(2)
Expression
1 3
Speak one third or one over three
a+b c
+
d
the quantity a plus b over c,that fraction plus d
x2 a2
+
y2 b2
=
1
ax2 + bxy + cy2 + dx + ey
+f=0
Expression
27 3 10
a1 a2 . . . an
a1 a2 ... an
Speak two by two matrix first row two seven second row three ten n row vector a sub one a sub two dot dot dot a sub n
5 ‡©Ú ‡©
Symbol d/dx ∂/∂x
Speak d by dx or the derivative with respect to x the partial derivative with respect to x or partial over partial x
3
6 Ù¦êÆÎÒ
8
15 ˆ«ÎÒ
Symbol ∞ ∀
∃
⊥ % ∅ ∅ ∠ &
§ ◦C $ ‰ @ œ ’ ‘’ ” “” √
Q #
Speak infinity forall square circle triangle the integral of exists parallel virgule perpendicular to percent emptyset var nothing angle and semicircle division Celsius system dollar permill at exclam minute single quotation marks second double quotation marks right sharp ell hbar star Diamond numbersign
10 ‘of ¼ê
5
Expression p(x) = 3x2 + 2x − 4
q(x) = x3 − 8
p(x) = a0xn + a1xn−1 + . . . + an−1x + an
Speak p of x equals 3 x squared plus 2 x minus 4 q of x equals x cubed minus 8 p of x equals a sub zero x to the n plus a sub 1 x to the n minus 1 plus dot dot dot plus a sub n minus 1 x plus a sub n
Ξ
ξ
xi
ksi
ŽÜ
Z
ζ
zeta
zat
©
10
17 i1þ¡ þIÑ\•{
Symbol aˆ a˜ a` a¨ a¯ A
Code \hat{a} \tilde{a} \grave{a} \ddot{a} \bar{a} \widehat{A}
Symbol aˇ a´ a˙ a˘ a A
Code \check{a} \acute{a} \dot{a} \breve{a} \vec{a} \widetilde{A}
=0ˆ
Mµ
mu
mju
D