If the set a = {x | 2x-1|

If the set a = {x | 2x-1|

A:|2x-1|

If the set a = {x | 2x-1|

|2x－1|＜3
－3＜2x－1＜3
－1＜x＜2
That is, set a = (- 1,2)
3＋5x－2x^2＜0
2x^2－5x－3＞0
(2x＋1)(x－3)＞0
Ψ x ＜ - 1 / 2 or X ＞ 3
That is, set B = (- ∞, - 1 / 2) ∪ (3, + ∞)
Then a ∩ B = (- 1, - 1 / 2)

If for any allowable value in a certain range, P = | 1-2x | + | 1-3x | + +|If the value of 1-9x | + | 1-10x | is constant, then the value is ()
A. 2B. 3C. 4D. 5

Since 2 + 3 + 4 + 5 + 6 + 7 = 8 + 9 + 10, the value range of X is: 1-7x ≥ 0 and 1-8x ≤ 0, that is, 18 ≤ x ≤ 17, so p = (1-2x) + (1-3x) + +(1-7x) - (1-8x) - (1-9x) - (1-10x) = 6-3 = 3

If for any allowable value in a certain range, P = | 1-2x | + | 1-3x | + +|If the value of 1-9x | + | 1-10x | is constant, then the value is ()
A. 2B. 3C. 4D. 5

Since 2 + 3 + 4 + 5 + 6 + 7 = 8 + 9 + 10, the value range of X is: 1-7x ≥ 0 and 1-8x ≤ 0, that is, 18 ≤ x ≤ 17, so p = (1-2x) + (1-3x) + +(1-7x) - (1-8x) - (1-9x) - (1-10x) = 6-3 = 3

There is a formula y = (a ^ x + B ^ x) ^ (1 / x), where a and B are known constants. How to use matlab to draw the image of Y changing with respect to x? When do you want to find the maximum y
In fact, the original problem is to find y = (a ^ x + B ^ x + C ^ x +... + n ^ x) ^ (1 / x), a, B, C,..., n is known, and find the minimum value of y when x is taken.

>> x=-10:0.32:10;
≫ & gt; & nbsp; m = randInt (1,10, [1 & nbsp; 10]);%% produces a, B, c... n, n = 10
>> yy=zeros(10,length(x));
for i=1:10
      yy(i,:)=M(i).^x;
&The first line of a ^ X & nbsp; B ^ X & nbsp; C ^ X & nbsp; n ^ x, YY corresponds to a ^ x, the second line corresponds to B ^ x, and the third line corresponds to C ^ X
≫ & gt; & nbsp; y = sum (YY). ^ (1. / x);%% gets the final y, sum is the sum by column, that is (a ^ x + B ^ x + C ^ x +. + n ^ x)
≫ & gt; & nbsp; plot (x, y)%% X and y are one-to-one correspondence, so find the column number when y is the largest, then the value of X is the corresponding element of the column number
≫ & gt; & nbsp; [M, n] = find (y = = max (y))%% the image drawn is unimodal, the maximum, not the minimum
m =
     1
n =
&Nbsp; & nbsp; & nbsp; & nbsp; the column number of the 33% maximum value
>> x=x(n)
x =
&Nbsp; & nbsp; & nbsp; & nbsp; X corresponding to 0.2400%% y maximum

What does x (:, 1) in MATLAB sentence mean? How to use it? Thank you!

If x = [1,2,3; 4,5,6], then x (:, 1) = [1; 4], X (1,:) = [1,2,3], X (1,:) is to take a row

What does I * x mean in MATLAB

I'm sorry, you're using the C programming format, right
Matlab supports C language, but in fact matlab does not define variable types in this way
You get the same result as entering J
The reason is that j = I * x, I and X may not be assigned values, so the output string is coming

What does zeros mean in MATLAB

First, the help file in MATLAB is listed to explain the zeros function: zeros zeros array.ZEROS (N) is an N-by-N matrix of zeros.ZEROS (M,N) or ZEROS([M,N]) is an M-by-N matrix of zeros.ZEROS (M,N,P,...) or ZEROS([M N P ...]) is a...

Zeros in MATLAB

To create a matrix with 0 elements, such as a = zeros (3,5), is to create a 0 matrix with 3 rows and 5 columns

Matlab, a function f = x ^ 2 + 1, how to express, is a function, function defined function

function f=hanshu(x)
f=x^2+1;
end