Question

写出这些VB的表达式

Answer 1

1
x >= 10 And x <= 20

2
x <= 12 Or x >= 30

3
1 / (x -1)

4
(-b + Sqr(b ^ 2 + 4 * a * c)) / (2 * a)

5
Abs(x)

6
x Mod 5 = 0 And x Mod 7 = 0

7
Int(x * 100 + 0.5) / 100
或
Round(x, 2)
但两种方法都有一些误差

Answer 2

1、x>=10 and x<=20
2、x<=12 or x>=30
3、1/(x-1)
4、(-1*b+sqr(b^2-4*a*c))/(2*a)
5、abs(x)
6、x mod 5 =0 or x mod 7 =0
7、Format(x, "0.00")