Question

已知求正弦 sin(x) 的近似值的多项式公式为：

Answer 1

# include

# include

int Factorial(int n);

main()

{

double x, y, m;

int i;

double sum1;

scanf("%lf%lf", &x, &y);

sum1 = x;

for (i = 1; fabs(sum1 - sin(x)) >= y; i++)

{

m = pow(x, (2 * i + 1)) * pow(-1, i) / Factorial(2 * i + 1);

sum1 += m;

}

printf("%lfn", sum1);

return 0;

}

int Factorial(int n)

{

int a, sum2;

sum2 = 1;

for (a = 1; a