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Management joint examination - mathematical formula
2022-06-30 15:27:00 【Alien-Hu】
List of articles
- (1) Point to line distance formula , ax + by + c = 0 , spot A(x1, y1)
- (2) The formula for the distance between two parallel lines :L1 : ax + by + c1 = 0 ;L2 ax + by + c2 = 0
- (3) Complete cubic formula (a + b)³ , (a - b)³
- (4) Cubic sum 、 Cubic difference formula a³ + b³ or a³ - b³
- (5) Quadratic function of one variable y = ax² + bx + c Vertex coordinates 、 Axis of symmetry 、y Axis intercept
- (6) The operation formula of exponential function
- (7) Logarithm formula
- (8) Quadratic function of one variable y = ax² + bx + c ,x1 , x2 Is the two roots of the equation
- (9) A system of bivariate first-order equations
- (10) to be divisible by
- (11) Prime numbers and composite numbers
- (12) Odd and even numbers
- (13) The absolute value And absolute value properties
- (14) The crossover method
- (15) A sequence of equal differences
- (16) Geometric series
- (17) Triangle area -- Helen's formula 、 Equilateral triangle 、 Midline formula
- (18) Quadrilateral area formula
- (19) Two point distance formula
- (20) Linear equation
- (21) The positional relationship between circles
- (22) Cuboid
- (23) Cylinder
- (24) sphere
- (25) variance
- (26) An introduction to : Completely staggered
- (27) The value of the square of the common number and the root sign number
There are hints at the bottom of the article
(1) Point to line distance formula , ax + by + c = 0 , spot A(x1, y1)
(2) The formula for the distance between two parallel lines :L1 : ax + by + c1 = 0 ;L2 ax + by + c2 = 0
(a/b The value of needs to be reduced to the same , Only keep C The values of the parts are different )
(3) Complete cubic formula (a + b)³ , (a - b)³
(4) Cubic sum 、 Cubic difference formula a³ + b³ or a³ - b³
(5) Quadratic function of one variable y = ax² + bx + c Vertex coordinates 、 Axis of symmetry 、y Axis intercept
(6) The operation formula of exponential function
- a^m * a ^n
- a^m ÷ a ^n
- (a^m)ⁿ
- aº
- a^-p
(7) Logarithm formula
Same base logarithm :
㏒ a (m) + ㏒ a (n)
㏒ a (m) - ㏒ a (n)
Power operation :

Bottom formula :
㏒ a (b)e The value of is about :
(8) Quadratic function of one variable y = ax² + bx + c ,x1 , x2 Is the two roots of the equation
- x1 + x2 =
- x1*x2
- 1/x1 + 2/ x =
- 1/ (x1 ^ 2) + 1/ (x2 ^ 2)
- x1 ^ 3 + x2 ^ 3
(9) A system of bivariate first-order equations


(10) to be divisible by


(11) Prime numbers and composite numbers

(12) Odd and even numbers

(13) The absolute value And absolute value properties

(14) The crossover method

(15) A sequence of equal differences

(16) Geometric series

(17) Triangle area – Helen's formula 、 Equilateral triangle 、 Midline formula
The side lengths of triangles are :a、b、c, seek The area of the triangle ?
( Helen's formula )

The side length of an equilateral triangle is known a, Find the area of the triangle S

A triangle is known ac = 4 , ab = 6 , bc = 8 , d yes bc The midpoint of , seek AD The length of the line segment :
( Midline formula )
(18) Quadrilateral area formula

(19) Two point distance formula

(20) Linear equation

(21) The positional relationship between circles

(22) Cuboid

(23) Cylinder

(24) sphere

(25) variance

(26) An introduction to : Completely staggered
D(n) The calculation formula for staggered arrangement ,n How many elements are staggered
D(1)=
D(2)=
D(3)=
D(4)=
D(5)=
(27) The value of the square of the common number and the root sign number


√2≈1.414
√3≈1.732
√5≈2.236.
e ≈ 2.718
(1)
(2)
(3)
(4)
(5)


(6)
(7)
e = 2.71828…
(8)


(9)
(10)

(17)


(26)
D(1)=0
D(2)=1
D(3)=2(0+1)=2
D(4)=3(2+1)=9
D(5)=4(9+2)=44
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