if a+b=3 and a**2+b**2=7,求a**4+b**4=?

if a+b=3 and a**2+b**2=7,求a**4+b**4=? if(a) {if(b If =a(a+1)/2 for all integres a and b =,then is( ) If A×B=6(A-B),what are the minimum values of A and If A=6+9x^2 and B=7+3x,the what is A in terms of int a=1,b=2,c=3;if(a>b)a=b;if(a>c)a=c;则a的值为3. int a =1,b=0; if(--a) b++; else if (a=0)b+=2; else b+=3; b等于多少 main() { int a,b,c; a=1;b=2;c=3; if(a 设有定义：int a=1,b=2,c=3;,以下语句中执行效果与其它三个不同的是?A.if（a>b) c=a,a=b,b=c; B.if（a>b){ c=a,a=b,b=c;}C.if（a>b) c=a;a=b;b=c;D.if（a>b){ c=a;a=b;b=c;} if(a>b) if(b>c)a=a+b; 这样两个if是什么意思?#include using namespace std; void main( ) { int a=2,b=3,c=4; if(a>b) if(b>c)a=a+b; else a=a+c; cout If “a” is a positive number less than 1 and b= 根号a ,then a（ ）b If a and b are integers,10A3=1,152A7=3,and then 379A6 is equal to______.说明理由 a=1 b:if a #include main(){int a=1,b=0; if(!a)b++; else if (a==0) if(a) b+=2; else b+=3; printf(b) C语言IF的问题当a=1,b=2,c=3时,以下if语句执行后,a,b,c中的值分别是多少if (a>c)b=a;a=c;c=b; C语言语句int a=1,b=2,c=3;下面不一样的是A.if(a>b)c=a,a=b,b=c;B.ifa>b){c=a;a=b;c=b;}C.if(a>b)c=a;a=b;b=c; 在c语言中,int a=1,b=2,c=3; ①if(a＞c）b=a,a=c,c=b； ②if（a在c语言中,int a=1,b=2,c=3;①if(a＞c）b=a,a=c,c=b；②if（a＞c）b=a；a=c；c=b；③if(a＞c){b=a,a=c,c=b；}④if(a＞c){b=a；a=c；c=b；}以上四中情况,abc各为 If A and B are mutually exclusive events where P(A)=0.2andP(B)=0.3,then p(A and B) is