Not sure how to do these Ubunto problems. Someone please help Compose a program

Question

Not sure how to do these Ubunto problems. Someone please help

Compose a program that writes the coordinates of a random point (a, b, c) on the surface of a sphere. To generate such a point, use Marsaglia's method: Start by picking a random point (x, y) in the unit disk using the method described at the end of this section. Then, set a to 2 x squareroot (1 - x^2 - y^2), b to 2 squareroot (1 - x^2 -y^2), and c to 1 - 2 (x^2 + y^2). Exponential function. Assume that x is a float. Compose a program that uses the Taylor series expansion to assign e^x = 1 + x + x^2/2! + x^3/3! + ... to total.

Explanation / Answer

#include<stdio.h>

#include<conio.h>

#include<math.h>

long int factorial(int n);

int main()

{

int x,i;

float s,r;

char c;

printf("You have this series:-1+x/1! + x^2/2! + x^3/3! + x^4/4!..x^x/x!");

printf("To which term you want its sum of ? ");

scanf("%d",&x);

s=0;

for (i=1;i<=x;i++)

{ s=s+((float)pow(x,i)/(float)factorial(i));

}

printf("The sum of %d terms is %f",x,1+s);

fflush(stdin);

getch();

}

long int factorial(int n)

{

if (n<=1)

return(1);

else

n=n*factorial(n-1);

return(n)
}

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