C语言的一个问题#include #include int main(){float a,b,c,disc,p,q,x1,x2;scanf("%f,%f,%f,&a,&b,&c);disc = b*b - 4 *a 8c;p = -b /(2*a);q = sqrt(disc)/(2*a);x1 = p +q;x2 = p - q;printf("x1=%7.2f,x2=%7.2f\n",x1,x2);return 0;}这个程序里面的,x
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![C语言的一个问题#include #include int main(){float a,b,c,disc,p,q,x1,x2;scanf(](/uploads/image/z/8440468-52-8.jpg?t=C%E8%AF%AD%E8%A8%80%E7%9A%84%E4%B8%80%E4%B8%AA%E9%97%AE%E9%A2%98%23include+%23include+int+main%28%29%7Bfloat+a%2Cb%2Cc%2Cdisc%2Cp%2Cq%2Cx1%2Cx2%3Bscanf%28%22%25f%2C%25f%2C%25f%2C%26a%2C%26b%2C%26c%29%3Bdisc+%3D+b%2Ab+-+4+%2Aa+8c%3Bp+%3D+-b+%2F%282%2Aa%29%3Bq+%3D+sqrt%28disc%29%2F%282%2Aa%29%3Bx1+%3D+p+%2Bq%3Bx2+%3D+p+-+q%3Bprintf%28%22x1%3D%257.2f%2Cx2%3D%257.2f%5Cn%22%2Cx1%2Cx2%29%3Breturn+0%3B%7D%E8%BF%99%E4%B8%AA%E7%A8%8B%E5%BA%8F%E9%87%8C%E9%9D%A2%E7%9A%84%2Cx)
C语言的一个问题#include #include int main(){float a,b,c,disc,p,q,x1,x2;scanf("%f,%f,%f,&a,&b,&c);disc = b*b - 4 *a 8c;p = -b /(2*a);q = sqrt(disc)/(2*a);x1 = p +q;x2 = p - q;printf("x1=%7.2f,x2=%7.2f\n",x1,x2);return 0;}这个程序里面的,x
C语言的一个问题
#include
#include
int main()
{
float a,b,c,disc,p,q,x1,x2;
scanf("%f,%f,%f,&a,&b,&c);
disc = b*b - 4 *a 8c;
p = -b /(2*a);
q = sqrt(disc)/(2*a);
x1 = p +q;
x2 = p - q;
printf("x1=%7.2f,x2=%7.2f\n",x1,x2);
return 0;
}
这个程序里面的,x1=p+q,x2=p-q代表的是什么意思?谢谢你们了.
C语言的一个问题#include #include int main(){float a,b,c,disc,p,q,x1,x2;scanf("%f,%f,%f,&a,&b,&c);disc = b*b - 4 *a 8c;p = -b /(2*a);q = sqrt(disc)/(2*a);x1 = p +q;x2 = p - q;printf("x1=%7.2f,x2=%7.2f\n",x1,x2);return 0;}这个程序里面的,x
这应该是一元二次方程的求根公式.型如 a*x方+b*x+c=0 .a是二次项系数、b是一次项系数、c是常数项,x1、x2是方程的两个根,p、q不代表什么意思、是求根公式的中间步骤而已.