How much is in (a-b), find the formula related to in

How much is in (a-b), find the formula related to in

There is no formula related to in (a-b)
Here's the formula for logarithm,
 
 
4-0.3x=3-0.4x
4 - 0.3x = 3 - 0.4x
0.4x - 0.3x = 3 - 4
0.1x = -1
x = -10
0.1X=-1
X=-10
What is the mathematical unit in
In is inch, length unit, 1in = 25.4mm
In solving the equation 4x + 1 = 3x-2, the following shift is correct ()
A. 4x+3x=1-2B. 4x-3x=-2-1C. 4x-3x=2-1D. 4x+3x=-2-1
From the original equation, 4x-3x = - 2-1 is obtained, so B
What is the mathematical unit of in
It's not a unit, it's a sign of natural logarithm,
6 (3x-2) = 78 and 4 (4x + 8) = 40
"My love"
6(3x-2)=78
3x-2=78/6
3x-2=13
3x=13+2
3x=15
x=15/3
X=5
4(4x+8)=40
4x+8=40/4
4x+8=10
4x=10-8
4x=2
x=2/4
x=1/2
6(3x－2)=78
18x-12=78
18x=90
X=5
4（4x+8）=40
16x+32=40
16x=8
x=1/2
6(3x-2)=78----->(3x-2)=78/6-------->3x=13+2---->x=15/3---->x=5
4(4x+8)=40---->(4x+8)=40/4---->4x=10-4---->x=6/4---->x=2.5
6（3x-2）=78
3x-2=13
3x=15
X=5
4(4x+8)=40
4x+8=10
4x=2
x=0.5
What does in mean in mathematics?
LN, not in, is the natural logarithm, that is, the logarithm whose base is e. the source of E is the nth power of (1 + 1 / N)
It has many wonderful properties. For example, the derivative of LNX is itself
Main applications: 1 + LNX ≤ x, (x > 0), take equal value when x = 1
In fact, LZ knew it after entering high school. It is a very common thing, but I admire the landlord's spirit of exploration. I didn't understand it at all before entering high school
If it's really in, it's English, in
Ln is the natural logarithm, which is the logarithm with E as the base
e=2.718281828459^=…………
The square of 3x = 4x-1, how to solve it
Move 4x-1 to the left of the equal sign to get 3x-4x + 1 = 0. Multiply the cross to get (x-1) (3x-1) = 0, so x = 1 or x = 1 / 3
Calculation formula of runway curve length
The actual radius of runway can not be used in the calculation of runway curve
If it is the first runway, the length of the curve on that side is: C = π (R + 0.3m);
If it is the second to the eighth runway, the length of the curve on that side is: C = π (R + 0.2m)
If you know the length of a curve and the circumference of the runway, you can calculate it
If we know the square of X - 4x = 3, then 3x - 12x - 1=
x^2-4x=3
X^2-4x-3=0
(X-1)(X-3)=0 ==>X1=1,X2=3
Then 3x-12x-1 = - 9x-1 = - 10 or - 28
3x2-12x-1 = 3 (x2-4x) - 1 = 3 times 3-1 = 9-1 = 8