Solve the following sets of simultaneous equations: (i) (ii) (iii) At a snack bar John paid $5.15 for a hamburger, a dim sim and a serve of chips. At the same snack bar Andrew paid $6.50 for a hamburger, 4 dim sims and a serve of chips while it cost Mr Thomson $21.20 for 4 hamburgers, 8 dim sims and 3 serves of chips. Find the cost of each food item. 【查看更多】

 

题目列表(包括答案和解析)

以下是用Scilab编写的程序,输出a,b的含义是________________.

a=input(“please give the first number”)

b=input(“please give the second number”)

while a<>b

   if a>=b

    a=a-b;

   else

    b=b-a;

  end

end

print(%io(2),a,b)

查看答案和解析>>

以下是用Scilab编写的程序,输出a,b的含义是________________.

a=input(“please give the first number”)

b=input(“please give the second number”)

while a<>b

   if a>=b

    a=a-b;

   else

    b=b-a;

  end

end

print(%io(2),a,b)

查看答案和解析>>

i是虚数单位,
5i
2-i
=(  )
A、1+2iB、-1-2i
C、1-2iD、-1+2i

查看答案和解析>>

若f(tanx)=cos2x,则f(-tan
π
3
)
的值是(  )
A、
1
2
B、-
3
2
C、-
1
2
D、
3
2

查看答案和解析>>

过点A(a,a)可作圆x2+y2-2ax+a2+2a-3=0的两条切线,则实数a的取值范围为(  )
A、a<-3或1<a<
3
2
B、1<a<
3
2
C、a<-3
D、-3<a<1或a>
3
2

查看答案和解析>>


同步练习册答案