What is the square of lne and why?

What is the square of lne and why?

lne=1
Lne squared = 1

How much is ln1-ln | - 2 |? How?

ln1=0
So: ln1-ln | - 2 | = - LN2

A simple question for high numbers: what does ln mean? How much is ln1? What's ln100? What's the trick?
I feel dizzy.... How do you say it differently
Is 10 the bottom or e the bottom????? I feel dizzy

We know that the base of general logarithm can be any positive number which is not equal to 1. That is to say, if the base of logarithm is transcendental number e (E = 2.718), we call such logarithm natural logarithm, which is represented by the sign "LN". Here "1" is the first letter of logarithm, "n" is the first letter of nature

In a pure capacitor circuit, if the current flowing through the capacitor is known to be sinusoidal and the initial phase is 0, then the initial phase of the voltage at both ends of the capacitor is ()
I don't know what voltage lag means. Is the answer positive or negative?

When the initial phase of the current flowing through the capacitor is 0 degrees, the phase angle of the voltage is 0-90 = - 90 degrees, and the answer is - 90 degrees

124 students of a school go for an outing. The minibus is limited to 20 people, and the rent is 200 yuan. The minibus is limited to 8 people, and the rent is 95 yuan. Please help to design a most affordable car rental scheme

It's cheaper to take as many minibuses as possible without free seats. Scheme 1: 124 △ 20 = 6 It costs 200 × 6 + 95 = 1295 yuan. Plan 2: 124 = 20 × 5 + 8 × 3, that is, it can rent 5 minibuses

It is known that the square matrix A of order n satisfies the relation a ^ 2-3a-2e = 0. It is proved that a is an invertible matrix and its inverse matrix is obtained

A^2-3A=2E
A * (a-3e) / 2 = e, so a is reversible
The inverse matrix is a ^ (- 1) = (a-3e) / 2

Why is the vector product of two vectors parallel to the plane the normal vector of the plane?
I know that the vector after cross multiplication of two vectors is perpendicular to the plane formed by the two vectors, but it seems that the multiplied vector may not be perpendicular to the required plane. I am a little confused

What is the required plane? Perpendicular to the plane formed by these two vectors. This is the definition of difference multiplication

Two teachers lead several students to travel (the travel fee is paid in a unified way). They contact two travel agencies that offer 100 yuan per person. The preferential terms of travel agency a are: two teachers pay in full, and students are charged 75% off the quoted price; the preferential terms of travel agency B are: everyone is charged 20% off (80% of the quoted price), Ask which travel society is more affordable? Use one dollar inequality!

Suppose the number of students is x, then the cost of a travel agency is: 2 * 100 + 75X = 200 + 75X, and the cost of B travel agency is: (2 + x) * 80 = 160 + 80x
Let the two travel agencies have equal expenses, 200 + 75X = 160 + 80x
The solution is x = 8
Therefore, when the number of students is less than 8, travel agency B benefits; when the number of students is more than 8, travel agency a benefits

Lim x tends to the limit of 0 (xcotx-1) / x ^ 2

It is known that the square of | 2a-4 | + (2a-b-k) is 0 when K=__ 3A = 2B