With the scientific counting method, the number of integer digits can be determined by the power exponent of 10. If the power exponent of 10 is n, what is the number of integer digits

With the scientific counting method, the number of integer digits can be determined by the power exponent of 10. If the power exponent of 10 is n, what is the number of integer digits

3.1*10^2=310
If the power exponent of 10 is n, then the integer number of this number is n + 1
Use scientific notation to represent an n-bit integer, where the exponent of 10 is n-1
If the exponent of 10 is n, then the integer of the number is n + 1
N + 1! Wrong. Don't look for me
The range of function y = (xsquare + x) / (xsquare + X + 1)
yx^2+yx+y=x^2+x+1
(y-1)x^2+(y-1)x+y=0
If y = 1, then y = 0
If y is not equal to 1, then Δ = (Y-1) ^ 2-4y (Y-1) > = 0,
The solution is: - 1 / 3
y=(x^2+x)/(x^2+x+1)
=[(x^2+x+1)-1]/(x^2+x+1)
=1-1/(x^2+x+1)
=1-1/[(x+1/2)^2+3/4]
(x+1/2)^2+3/4>=3/4
Then 0 = - 1 / 3
Only the first, second and sixth floors are correct. Identification is complete
Given that the second power of (m-n) is 8 and the second power of (M + n) is 2, find the second power of M + the second power of n
The second power of (m-n) = 8, M & # 178; + n & # 178; - 2Mn = 8;
The second power of (M + n) = 2, M & # 178; + n & # 178; + 2Mn = 2;
Add the two formulas: 2m & # 178; + 2n & # 178; = 10
m²+n²=5；
　　∵﹙m－n﹚²＋﹙m＋n﹚²=m²－2mn+n²＋m²＋2mn＋n²=8+2
　　∴2﹙m²+n²﹚=10
　　∴m²+n²=5
The range of the function y = (x-x squared) 1 / 2
u=x-x^2=-(x-1/2)^2+1/4≤1/4
y=1/u≥4 or y=1/u
Which one is on
Please take the answer and support me. Question: 1 on x-x square
If the third power of a = - the third power of a, then a; if the second power of a = - the second power of a, then a
If the third power of a = - A, then a ≤ 0
If the second power of a = - the second power of a, then a = 0
If the third power of a = - A, then a is less than or equal to 0;
If the second power of a = - the second power of a, then a = 0
Ask: the range of function y = x square - 1 / x square + 1 is ()
A.｛y|-1≤y＜1｝ B.｛y|-1≤y≤1｝C.｛y|-1＜y≤1｝D.｛y|-1＜y＜1｝
A
The reduction is in evaluation; (4a + 3A & # 178; - 3 + A to the third power) - (3a & # 178; + A to the third power), where a = - 2
（4a+3a²-3+a³）-（3a²+a³）
=4a+3a²-3+a³-3a²-a³
=4a-3
=4×(-2)-3
=-11
The range of the following functions: (1) the following functions are the following: (1) the following functions: (1) the following functions are the following: (1) the following functions: (1) the following functions: (1) the following functions: (: (1) the following: (1) the following functions: (: (1) the following: (1) the following: (: (: (1)) the following: & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & & nbsp; & nbsp; & nbsp; & nbsp; & & nbsp; & nbsp; & & nbsp; & nbsp; & nbsp; & nbsp; (: (: (1) the following: (: (: (: (1) as: (1) the following: (1) the following: (1) the following: (1) the following: (1): (: (1): (1): (1): (1): (1)))) the) the following: (: (1)) the) the) the following: (1) the following: (1) the following: (1) the) the) the following: (1) the) the(0, 3))
(1) ∵ y = x + 1 monotonically increasing, the domain of definition is [0. + ∞), the range of function: [1, + ∞) (2) ∵ y = 1 − X21 + x2 ∵ x2 = 1 − Y1 + y ∵ x2 ≥ 0, ∵ 1 − Y1 + y ≥ 0, that is - 1 ＜ y ≤ 1, the range of function is: (- 1, 1). (3) ∵ y = - x2 + 4x-7, X ∈ {0, 1, 2, 3, 4}, ∵ axis of symmetry
3A times B-5 (AB + 3 / 5A times B-A)
3a²b-5×（ab²+3/5a²b-a²b)
=3a²b-5ab²－3a²b+a²b
＝a²b－5ab²
＝ab(a-5b)
5a^2b-5ab^2
Given the function FX = 1 + 2 (absolute value of X - x), (- 2 < x ≤ 2), the function is expressed in the form of piecewise function,
f(x)=1(0≤x≤2);
=1-x(-2＜x＜0).