Let vectors A1, A2,. As (s > = 2) be linearly independent, and β 1 = a1 + A2, β 2 = A2 + a3,... β S-1 = a (s-1) + as, BS = as + A1. The linear correlation of vectors β 1, β 2,. β s is discussed,

Let vectors A1, A2,. As (s > = 2) be linearly independent, and β 1 = a1 + A2, β 2 = A2 + a3,... β S-1 = a (s-1) + as, BS = as + A1. The linear correlation of vectors β 1, β 2,. β s is discussed,

Proof 1: let K1 β 1 + K2 β 2 +... + K (s-1) β (s-1) + KS β s = 0, and get: (K1 + KS) a1 + (K1 + K2) A2 +... + (K (s-1) + KS) as = 0, which is linearly independent of A1, A2, A3,..., as, and then K1 + KS = 0k1 + K2 = 0k2 + K3 = 0... K (s-1) + KS = 0, which is linearly independent of K1, A2, A3,..., as

24=x^2-14x
x=?

24=x^2-14x
x^2-14x -24=0
(x-7)^2-73=0
(x-7)^2=73
x-7=±√73
x=7±√73

Given that the set of integer solutions of inequality x ^ 2-2x + A-2 < 0 about X is {1}, what is the set of values of real number a

(x-1)^2

If x ^ 2 + 6x + m is the complete square of a binomial, then the constant M=——

x²+6x+m
Because the original is a complete square of binomial
Then the original formula = (x + 3) ² + M-9
∴m=9

To judge whether a proposition is true or false: there exists x ∈ r such that SiNx cosx = √ 3

sinx-cosx
=√2(sinx*√2/2-cosx*√2/2)
=√2(sinxcosπ/4-cosxsinπ/4)
=√2sin(x-π/4)
So the maximum value = √ 2

Find the remainder of 3333 to the power of 5555 + 5555 to the power of 333 divided by 7
Sorry, the title should be: find the remainder of 3333 to the power of 5555 + 5555 to the power of 3333 divided by 7

3333 divided by 7 to make 1
5555 divided by 7 leaves 4
333 divided by 7 leaves 4
The remainder of the power of 3333 to 5555 + the power of 5555 to 333 divided by 7
=The remainder of 1 * 5555 + 4 * 333 divided by 7
=The remainder of (7n + 4) + 4 * (7n + 4) divided by 7
=The remainder of 4 + 16 = 20 divided by 7
The remainder of 20 divided by 7 is 6
Let's choose me

The parameters of the electric energy meter are 220 V, 5 A, 3000 R / kW. H. If the electric rice cooker works for 5 minutes and the turntable of the electric energy meter turns 240 times, what is the power of the electric rice cooker
Urgent,

Because 3000r is 1kW. H, working 5 minutes = 1 / 12h, 240x12 = 2880 circles, 2880 / 3000 = 0.96kw. The power of electric rice cooker is 960W

What is the existence theorem of zeros?
Such as the title

University Calculus inside the content, it is recommended to see calculus textbooks
Theorem (zero point theorem) Let f (x) be continuous on a closed interval [a, b], and f (a) and f (b) have different signs (i.e. f (a) × f (b))

How to calculate the current of three phase four wire circuit

Hello: 1. Three phase resistive load, rated current: I = P ^ (1.732 × U). 2. Three phase inductive (three-phase motor) load, rated current: I = P ^ (1.732 × u × cos φ × η)

X-Y and Y-X bisection

Or take - 1 ahead
Or take - 1