If a@b=(3xb)then the value of 2+(2xa)@(3@5)is急

If a@b=(3xb)then the value of 2+(2xa)@(3@5)is急 A=2:b=1:c=0 if a then if b then if c then Print “1” else Print “2” else Print “3” else Print 设向量a=(3,3),b=(1,-1)若(a+xb)⊥(a-xb)则实数x= 英语奥数竞赛题：If a ⊕b =(3×b) then the value of 2+(2×a) ⊕(3⊕5)is 是什么意思,怎么解答? If A=1,B=2,C=3……Z=26,then how much is the word ATTITUDE If A=1,B=2,C=3...Z=26,then how much is the word ATTITUDE? 与if Option1.value=true then这条语句不等价的是?A）if option1.value then B）if option1=true C) if value=true then D）if option1 then 一道简单的英语数学题：If x²-7x+9=(x+a)²+b for all x,then what are the values of a and b if a==0 then return; 已知xa=√3,xb=3√3,求a：b If =a(a+1)/2 for all integres a and b =,then is( ) If the root equation (a²-1)x+5|b|-10=0 had inn,(a,b) is a pair of the real number,then the pair of real number (a,b) is ( ) 行列式的问题 对称矩阵Let A and B be n × n matrices.Which of the following statements are always true?(i) If det(A) = det(B) then det(A − B) = 0.(ii) If A and B are symmetric,then the matrix AB is also symmetric.若A对称 实数a,b满足(x+xb)的平方+x+xb-2=0,则(x+xb)的平方的值为 If a and b are non-zero real numbers and (1-99a)(1+99b)=b,then the value for 1／a-1／b+1 is( )(a)1 (b)100 (c)-1 (d)-100 If the solution of the inequality ≥2 is the set (－3,－1),then the parameter a is . If a < b Then t = a:a = b:b = t If a < b Then t = a:a = b:b = t 这是两个数比较大小的代码,看不 pascal if...then 语句例如：if a=b then write('123');我想在write('123') 后面再加 一个 write('456') 怎么样做?是不是用and连接