This problem exercises the basic concepts of game-playing using tic-tac-toe (noughts and crosses) as an example. we define x[n] as the number of rows, columns, or diagonals with exactly n x's and no o's. similarly, o[n] is the number of rows, columns, or diagonals with just n o's. the utility function thus assigns +1 to any position with x[3], = 1 and —1 to any position with o[3], - 1.all other terminal positions have utility 0. we will use a linear evaluation function defined as eval = 3*x[2] + x[1] - (3*o[2] + o[1])approximately how many possible games of tic-tac-toe are there? show the whole game tree starting from an empty board down to depth 2, (i. e., one x and one o on the board), taking symmetry into account. you should have 3 positions at level 1 and 12 at level 2.mark on your tree the evaluations of all the positions at level 2.mark on your tree the backed-up values for the positions at levels 1 and 0, using the minimax algorithm, and use them to choose the best starting move. circle the nodes at level 2 that would not be evaluated if alpha-beta pruning were applied, assuming the nodes are generated in the optimal order for alpha-beta pruning.

the correct answer is c.stops after infancy and childhood.

myelin is the substance of the central nervous system (cns) that insulates nerve cell axons to increase the speed at which nerve impulse travels. myelination is a process of myelin formation. this process occurs postnatally, begins in the embryo during the midst of early development and finishes after birth.

answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

//main function

int main()

{

  // variable

 int n;

 cout<<"enter a number:";

 // read the input

 cin>>n;

 // find the square root of the absolute value

 float square_root=sqrt(abs(n));

 // print the square_root

 cout<<"square root of "<<n<<" is: "<<square_root<<endl;

  return 0;

}

Explanation:

Read a number from user and assign it to "n".Then find its absolute value with abs() function.Then calculate the square root of the absolute value with sqrt() function.Print the square root of the number.

Output:

enter a number:-17

square root of -17 is: 4.12311

                                                         This is easy

                                                     sinserly Natalie 7 grader (this is not that hard)

answer:

Romans

Explanation:

Hope it helps