If y = the domain (1 / 2,3) of FX, then the domain of F (log3x) is IOG is based on 3

If y = the domain (1 / 2,3) of FX, then the domain of F (log3x) is IOG is based on 3

That is, the logarithm of 1 / 2 < log with 3 as the base x is less than 3, that is, 3 & # 189; < x < 3 & # 179;, so the definition field of function f (log with 3 as the base x logarithm) is (3 & # 189;, 27)

If the definition field of function FX is - 2 ≤ x ≤ 1, G (x) = FX + F (- x)
Finding the domain of G (x) = FX + F (- x)

The definition field of FX is - 2 ≤ x ≤ 1
So there's - 2

F (x) = log3 (X & # 178; - 3), find f (2), f (- 3). Find the domain of function definition, and find the function value at a given point

f(x)=log3(x²-3)
Definition field of function
x²-3>0
x√3
Find f (2) = log3 (2 & # 178; - 3) = log3 (1) = 0
f(-3)=log3[(-3)²-3]=log3(6)

It is known that the domain of the function f (x) = log3 (- X & # 178; + X + 2) is set a
G (x) = x & # 178; - 2x + 2, the range of X ∈ R is set B, u = (- ∞, + ∞) 1. Find a and B 2. Find a ∩ B, a ∪ B, a ∩ (cub)

1)A=-x²+x+2>0=(-1,2)
B=[1,﹢∞)
2)A∩B=[1,2) A∪B=(-1,﹢∞)
3)A∩（CuB)=(-1,1)

Given that the sequence {an} satisfies the N + 1 power of A1 = 1, an + 1 = 3an + 2, find an

A (n + 1) = 3an + 2 ^ (n + 1) let a (n + 1) + k * 2 ^ (n + 1) = 3 [a (n) + k * 2 ^ n], then a (n + 1) = 3an + 3K * 2 ^ n-2k * 2 ^ n = 3an + k * 2 ^ n, so k = 2, that is, a (n + 1) + 2 * 2 ^ (n + 1) = 3 [a (n) + 2 * 2 ^ n] so {an + 2 * 2 ^ n} is an equal ratio sequence, the first term is a1 + 2 * 2 ^ 1 = 5, the common ratio is 3, so an + 2 * 2 ^ n = 5 * 3 ^ (n-1)

I don't know how to speak English
I don't know. I have no idea

I don't know / have no idea what you are talking about

The area of Tiananmen Square is about 440000 square meters. Please estimate that one millionth of it is equal to the area of ()
A. Classroom floor B. blackboard C. desk D. pencil box

440000 square meters = 440000 square meters, 440000 × 11000000 = 0.44 (square meters). It is estimated that in the above options, it should be the area of desk top; therefore, select C

If the power of (x + 2) is 0 and the power of (x-1) is - 2, then the value range of X is?

x+2≠0
x≠-2
x-1≠0
x≠1
So x ≠ - 2 and X ≠ 1

How to write surprise English words?

surprise

If S2 = 2, S4 = 10, then what is S6 equal to?

Sn, s2n Sn and s3n-s2n are still arithmetic sequences
2(s4-s2)=s2+s6
2(10-2)=2+s6
2*8=2+s6
s6=16-2
s16=14