Common mathematical input symbols: ≈ = ≤≥ < > ≮ ≯ ∷+-∫/∫ ∮ ∝∞ ∧ ∨.
use
lowercase letter
ipa for english
International Phonetic Alphabet (IPA)
Bopomofo
α
α
The first letter of the Greek alphabet.
Letter a
Alpha method
β
β
beta
beta
beta
Γ
γ
microgram
microgram
microgram
Δ
δ
diethylenetriamine
delta
delta
Ε
ε
The fifth letter of the Greek alphabet.
The fifth letter of the Greek alphabet.
The fifth letter of the Greek alphabet.
Ζ
ζ
The sixth letter of the Greek alphabet.
The sixth letter of the Greek alphabet.
Cutting tower
Η
η
The seventh letter of the Greek alphabet.
The seventh letter of the Greek alphabet.
Aita
Θ
θ
The eighth letter of the Greek alphabet
θita
Siduo
Ι
ι
Tiny
Tiny
Jota
Κ
κ
The tenth letter of the Greek alphabet.
The tenth letter of the Greek alphabet.
Capa
∧
λ
The first 1 1 of the Greek alphabet
The first 1 1 of the Greek alphabet
The first 1 1 of the Greek alphabet
Μ
μ
The 12th letter of the Greek alphabet.
miu
mistake
Ν
ν
Greek alphabet letter 13
Small boat with single floating body
button
Ξ
ξ
xi
ksi
Kesai
Ο
ο
Greek alphabet letter 15
Omikron
Naomi Keron
∏
Pi?
circumference ratio
Personal Accident Insurance (abbreviation of personal accident insurance)
dispatch
Ρ
ρ
The first 17 of the Greek alphabet
Recurrent oral ulcer
soft
∑
σ
The 18th letter of the Greek alphabet.
The 18th letter of the Greek alphabet.
The 18th letter of the Greek alphabet.
Τ
τ
The 19th letter of Greek.
The 19th letter of Greek.
set up
Υ
υ
The 20th letter of Greek.
Jupsron
Puyi ·Xi· lang
Φ
φ
The 2nd1letter in Greek
International aviation association (abbreviation of Federation aeronautique internationale)
Rich in literary talent
Χ
χ
The 22nd letter of the Greek alphabet.
Kaye
happy
talent
talent
Pounds per square inch
psai
Puxi
Ω
ω
Omega
Omega
Omi
sign
meaning
I
The square root of-1
f(x)
The value of the function f at the independent variable x
Sin (x)
Sine function value at independent variable x
exp(x)
The value of the exponential function at the independent variable x, usually written as e x.
a^x
The x power of a; The rational number x is defined by the inverse function.
In x
Inverse function of exponent x
cut down on
Same as x
Luogeba
Logarithm of a based on b; blogba = a
cos x
The value of cosine function at independent variable x
Tan x
Its value is equal to sin x/cos x
cot x
The cotangent function or the value of cos x/sin x
Seconds x
The value of secant divisor is equal to1/cos x.
csc x
The value of cotangent function is equal to1/sin x.
asin x
Y, the value of the inverse function of the sine function at x, that is, x = sin y.
acos x
Y, the value of the inverse function of the cosine function at point x, that is, x = cos y.
Atan x
Y, the value of the inverse function of the tangent function at x, that is, x = tan y.
acot x
Y, the value of the inverse function of the cotangent function at x, that is, x = cot y.
The 10th ASEM Meeting
Y, the value of the inverse function of the secant function at x, that is, x = sec y.
acsc x
Y, the value of the inverse function of the cotangent function at x, that is, x = CSC Y.
θ
Unless otherwise specified, the standard symbol of angle refers to radian, especially for atan x/y, when x, y and z are used to represent points in space.
Me, j, k
Unit vectors representing x, y and z directions respectively.
(A, B, C)
A vector with elements a, b and c
(A and B)
A vector with elements a and b
(A and B)
Dot product of a and b vectors
Answer? b
Dot product of a and b vectors
(a？ b)
Dot product of a and b vectors
|v|
Modulus of vector v
|x|
The absolute value of the number x
Σ
Represents a sum, usually an index. The lower boundary value is written in its lower part and the upper boundary value is written in its upper part. For example, the sum of j from 1 to 100 can be expressed as: this means1+2+…+n.
M
Represents a matrix or sequence or something.
| v & gt
Column vector, that is, a vector whose elements are written as columns or can be regarded as a matrix of order k ×/kloc-0.
& ltv|
It can be written as a line, or it can be regarded as a vector from a matrix of order1× k.
Advanced (short for deluxe)
An infinitesimal change of variable x, such as dy, dz, dr, etc.
Repeat from the mark.
A slight change in length
ρ
Variable (x2+y2+z2) 1/2 or the distance from the origin in the spherical coordinate system.
r
The variable (x2+y2) 1/2 or the distance to the z axis in three-dimensional space or polar coordinates.
|M|
The determinant of the matrix m, whose value is the area or volume of the parallel region determined by the rows and columns of the matrix.
||M||
The value of determinant of matrix m is area, volume or hypervolume.
det M
Determinant of m
M- 1
Inverse matrix of matrix m
v×w
Cross product or cross product of vectors v and w
θvw
The angle between vectors v and w
Answer? B×C
Scalar triple product, determinant of matrix with a, b and c columns.
ultrasonic
The unit vector in the direction of vector w, that is, w/|w|
df
The slight variation of function f is small enough to apply to the linear approximation of all related functions.
df/dx
The derivative of f to x is also the linear approximate slope of f.
f '
The derivative of the function f to the corresponding independent variable, usually x.
? f/？ x
When y and z are fixed, the partial derivative of f to x. Usually, when several other variables are fixed, the partial derivative of f to a variable q is the ratio of df to dq. Anything that may lead to confusion of variables should be made clear.
(? f/？ x)|r，z
Partial derivative of f to x while keeping r and z constant.
Class f
The element is the partial derivative of f about x, y and z [(? f/？ x)，(？ f/？ y)，(？ f/？ Z)] or (? f/？ x)i +(？ f/？ y)j +(？ f/？ z)k； The vector field of is called the gradient of F.
?
Vector operator (? /? x)i +(？ /? x)j +(？ /? X)k, pronounced "del"
? f
Gradient of f; Its dot product with uw is the directional derivative of F in W direction.
w
Is the divergence of vector field w a vector operator? Dot product of the same vector w, or (? wx /？ x) +(？ wy /？ y) +(？ wz /？ z)
Curl w
Vector operator? Cross product of the same vector w
? ×w
The curl of w, its element is [(? fz /？ y) -(？ fy /？ z)，(？ fx /？ z) -(？ fz /？ x)，(？ fy /？ x) -(？ fx /？ y)]
?
Laplace differential operator: (? 2/? x2) +(？ /? y2) +(？ /? z2)
f”(x)
The second derivative of f about x, the derivative of f '(x)
d2f/dx2
The second derivative of f about x
Article 2, paragraph 10
It is also the second derivative of f with respect to x.
f(k)(x)
The k-th derivative of f with respect to x, the derivative of f (k- 1) (x)
T
Unit vector of tangent direction of curve. If the curve can be described as r(t), then T = (dr/dt)/|dr/dt|
Repeat from the mark.
Derivative of distance along curve direction
κ
Curvature of curve, derivative value of unit tangent vector relative to curve distance: |dT/ds|
ordinary
Unit vector of dT/ds projection direction, perpendicular to t.
B
The unit normal vector of planes t and n, that is, the plane of curvature.
τ
Curve torsion rate: |dB/ds|
g
gravitational constant
F
Standard symbol of force in mechanics
k
Spring constant of spring
circumference ratio
Momentum of the I-th object
H
Hamiltonian function of physical system, that is, energy expressed by position and momentum.
{Q，H}
Poisson bracket of Q and H.
The integral of f(x) is expressed as a function of x.
The definite integral of function f from a to b. When f is positive and a
L(d)
Equal subinterval sizes are d, and the value of the left end point of each subinterval is the riemann sum of f.
research and development
Equal subinterval sizes are d, and the value of the right end point of each subinterval is the riemann sum of f.
Male (female)
The equal subinterval size is d, and the maximum value on each subinterval is the riemann sum of f.
Male (female)
The equal subinterval size is d, and the minimum value on each subinterval is the riemann sum of f.
Formula input symbol
≈≡≠=≤≥≮≯∷ +-×÷/∫∮∝∞∧∨∑∏∪∩∈∵∴⊥‖∠⌒⊙≌∽√
+:plus sign (positive number)
-:Minus (negative)
*: Multiply by
* Divided by
=: equal to
≈: approximately equal to
(): parentheses (parentheses)
[]: square brackets
{}: curly braces
∫ Because
Therefore, ∴:
≤: less than or equal to
≥: greater than or equal to
∞: infinity
Lognx: the n power of logx
Xn: the n power of x
F (x): a function of x.
Differential of dx:x
x+y:x+y
(a+b): brackets A and B are closed.
A=b: a equals B.
A≠b: a is not equal to B.
A>b: a is greater than B.
A>& gtb: a is much bigger than B.
A≥b: a is greater than or equal to B.
X→∞: Close to infinity
X2: x squared
X3: x cube
√ ~ x: the square root of x
Cubic root of 3√~ x:x
3‰: three pimiers
N ∑ I = 1 xi: the sum of x, where x is from1to n.
N ∏ i = 1 xi: the product of x sub i, where i is from1to n.
∫ ab: the integral between a and b
Mathematical symbols (scientific symbols)-operation symbols
1. Basic symbol:+-× (/)
2. Score:/
3. Symbol: plus sign or minus sign
4. Similar congruence: π
5. Because of this: ∵∴
6. judgment category: = ≦ < ≯ (not less than) > ≯ (not greater than)
7. Set class: ∈ (belonging to) ∩ (union) ∩ (intersection)
8. Sum symbol: ∑.
9. n-th power symbol:? (primary party)? (square)? (cubic)? (4 th power)? (n power)
10. Lower corner mark:
(such as: a? b？ c？ d？ What's the effect? )
1 1. or NAND:
12. Derived symbol (remark symbol): "".
13. Degree:℃
14. Any:?
15. launch number:?
16. Equivalent number:?
17. Inclusions include:
18. Derivative: ∫?
19. Arrow category: ↗↙↖↘↑↓↓→←
20. Absolute value: |
2 1. Arc: ω
22. Circle: ⊙ 1 1. Or "not" not:.
12. Derived symbol (remark symbol): "".
13. Degree:℃
14. Any:?
15. launch number:?
16. Equivalent number:?
17. Inclusions include:
18. Derivative: ∫?
19. Arrow category: ↗↙↖↘↑↓↓→←
20. Absolute value: |
2 1. Arc: ω
22. Circle: VIII
α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ υ φ χ ψ ω
Α Β Γ Δ Ε Ζ Η Θ Ι Κ ∧ Μ Ν Ξ Ο ∏ Ρ ∑ Τ Υ Φ Χ Ψ Ω
а б в г д е ё ж з и й к л м н о п р с т у ф х ц ч ш щ ъ
ы ь э ю я
А Б В Г Д Е Ё Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ
Ы Ь Э Ю Я
Δ