Develop a C-code to meet the requirements below: Plot f(x) versus x on a graph u

Question

Develop a C-code to meet the requirements below: Plot f(x) versus x on a graph using any plot programs (Excel) Fit polynomials to the data using second-order polynomial Regression y = (a0 + a1 + a2x^2) Use Simpson's Rule to calculate integral f(x) dx, where a_0, a_1, and a_2 Are determined in step 1). The integration is limited between x values (0.5 - 7.5) Requirements:- Use C-code must contain the following features:- User of arrays, Use Of pointers Use of structure, Use of union, Use of functions and Function calls, Formatted output on screen and Saving of the same Output on a file.

Explanation / Answer

Solution:

#include<stdio.h>

void main()

{

int *x, *y, n, i, x1=0, x12=0, y1=0, x1y1=0, a1, a0, e;

printf("Enter how many values:");

scanf("%d", &n);

x=(float*)malloc(n*4);

y=(float*)malloc(n*4);

puts("Enter correspnding elements X and Y");

for(i=0; i<n;i++)

{

scanf("%d %d", &x[i], &y[i]);

x1+=x[i];

y1+=y[i];

x1y1+=(x[i]*y[i]);

x12+=(x[i]*x[i]);

}

a1 = (n*x1y1-x1*y1)/(n*x12-x1*x1);

a0=y1/n-a1*x1/n;

e=y[0]-a0-a1*x[0];

printf("a0= %d a1 = %d e= %d", a0, a1, e);

}

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