Is lnx-ln1 equal to ln (x / 1)?

Is lnx-ln1 equal to ln (x / 1)?

Yeah
lnx-ln1=lnx-0=lnx
ln(x/1)=lnx

Ln1 / 2 + 1 / 2 = ln √ E / 2 why

ln1/2+1/2=ln1/2+lne^1/2=ln(1/2 *√e )=ln√e/2

Can you guess who she is

Can you guess who is she?

The area of a classroom is 50 square meters. How many square kilometers is it? How many square meters is one millionth of it?

50 sq m = 0.00005 sq km or 1 / 20000 sq km
50 × 1 / 1000000 = 1 / 200000 M2

If the image of power function y = f (x) passes through point (4,1 / 2), then f (2)=

Then f (x) = x ^ a
So 4 ^ a = 1 / 2
2^2a=2^-1
2a=-1
a=-1/2
So f (2) = 2 ^ (- 1 / 2) = √ 2 / 2

What's the plural of candy

The plural sweets of sweet
He gave out the sweets to the children.
He distributed candy to the children
The plural sweetmeats of sweetmeats
Boxes of precious metal for sweetmeats
Precious metal candy box
The plural candies of candy
The children are hanging about their mother,hoping to get some candies.
The children followed their mother, hoping for some candy

If A1 = 2, S4 = 20, then S6 = ()
A. 16B. 24C. 36D. 42

The formula of the sum of the first n terms of the arithmetic sequence is: SN = n × (a1 + an) 2, so S4 = & nbsp; 4 × (a1 + A4) 2 = 20, and because A1 = 2, so A4 = 8. Because the sequence {an} is the arithmetic sequence, so an = 2n, so A6 = 12. So S6 = 16 can be obtained from the formula of the sum of the first n terms of the arithmetic sequence

Let f (U, V) be differentiable. It is proved that the normal vector at any point on the surface f (Cx AZ, cy BZ) = 0 is perpendicular to the constant vector
ABC is a constant

First of all, to prove that the normal vector is perpendicular to a constant vector is to find such a constant vector that satisfies the condition. Next, let's find this constant vector. First, find the normal vector of the surface at any point. According to the formula, the normal vector should be (f'x, f'y, f'z), and calculate f'x = C according to the derivative rule of composite function

45 and 72, 39 and 91

3 360
13 3549

The formula of square meter
My store is 9 meters long, 3.5 meters wide and 4 meters high. How many square meters are there altogether

Wall area: (9 + 3.5) * 4 = 50 square meters, floor area: 9 * 3.5 = 31.5 square meters, room volume: 9 * 3.5 * 4 = 126 cubic meters. Business area: 31.5 square meters