Question

The language has to be in C program
1. (a) rite a function, int factorial (int n), which returns n (the factorial of n, i e. 1 x2 x3 x...xn.) (b) Using int factorial (int n) above, write a program to compute 2. We want to find one of the roots of a cubic equation given by which is between 0 and 1 by an iterative method. Modify the equation above to 1 x Start with an appropriate initial value and do the iteration above until it is convergent. For example, x -0.5, 1+ 0.52 1+0.82 1+0.6092 0.728,

Answer 1

1. a) // function for factorial of any number. if value of n = 6, then output = 720.
let me explain you the function. value of n is passed in the function.After then we will
take an local variable i which is used in the for loop for recusively loop it untill its
value will be less than value of n. it will be done untill value of i becomes greater than
n. After then the sum of values will be stored in the output variable.
int factorial(int n)
{
int i;
int output = 1;

for (i = 1; i <= n; i++)
output = output * i;

return output;
}

b) below function will give you the sum of the series with the help of factorial method.

int factorial(int n)
{
int i;
int k;
int output = 1;
int sum = 1;
for(k=n;k<=1;k--){
for (i = 1; i <= k; i++){
output = output * i;}
   sum = sum + 1/output;}

return sum;
}