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#include<stdio.h> #include<conio.h> #include<math.h> int main() { int i, n; float x, T, S; i = 0; T = 1; S = 0; printf("\nNhap x: "); scanf("%f", &x); //x = -x; printf("\nNhap n: "); scanf("%d", &n); while(i < n) { T = pow(x, (2 * i + 1)) * pow(-1, (float)i); S = S + T; i++; } printf("\nTong la %f", S); getch(); return 0; }
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