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用vb求π的近似值
VB编程求π近似值
答:
1.
π
=2*22/(1*3)42/(3*5)62/(5*7)…...2.π/4=(1-1/3+1/5-1/7+1/9-…)3.(π^2)/6=1/(1^2)+1/(2^2)+1/(3^2)……Private Sub Command1_Click()Dim i As Long,
pi
As Double,k As Integer,m As Double i = 1 k = 1 pi = 0 m = 1 While (m >...
用VB求π近似值
答:
dim n#,
pi pi
= 2 'n = 1000 'n=50 n = val(inputbox("请输入一个数"))for i = 1 to n pi = pi * ((2 * i) ^ 2 / ((2 * i - 1) * (2 * i + 1)))'注意上面公式的括号优先级问题 'n = n + 1 'n 已经是循环,这句不要 next i print pi '
π的近似
...
用vb中的
for循环
计算π的近似值
。要求输入一个数然后根据这个
数求
近似...
答:
pi
= 2 n = Val(InputBox("请输入一个数"))For i = 1 To n pi = pi * ((2 * i) ^ 2 / ((2 * i - 1) * (2 * i + 1)))Next i MsgBox "
π的近似值
为" & pi End Sub
vb
代码
求π的近似值
,要求运算至通项t=(-1)^(n-1) /2n-1的绝对值小于...
答:
Dim n As Long, t As Single, P As Singlen = 1: P = 0Dot = (-1) ^ n / (1 - 2 * n)P = P + tn = n + 1Loop While Abs(t) > 1 / 10 ^ 6Print 4 * P返回 3.141598
用迭代算法
VB求π的近似值
?
答:
π
= π + 2 * (Factorial(i) / DoubleFactorial(2 * i + 1)) i = i + 1 Loop Print "AccuracyRating = " & AccuracyRating Print "π= " & π PrintEnd SubPublic Function Factorial(ByVal N As Integer) Dim i As Integer...
用VB求π近似值
答:
Private Sub Command1_Click()Dim i As Long,
pi
As Double, k As Integer, m As Double i = 1 k = 1 pi = 0 m = 1 While (m > 0.00001)m = 1 / (2 * i - 1)pi = pi + k * m i = i + 1 k = -k Wend Print "
π
/4
近似值
"; pi, 4 * pi End Sub ...
VB 求π的近似值
(在线等~急)
答:
Function zdy
pi
#(n)Dim i%, a zdypi = 2 For i = 1 To n a = 2 * i zdypi = zdypi * a * a / (a - 1#) / (a + 1#)Next i End Function Private Sub Command1_Click()Text1 = Format(zdypi(10), "#.###0")Text2 = Format(zdypi(100), "#.###0")Text3 ...
vb求pi的近似值
问题
答:
方法一:Private Sub Command1_Click()Dim i As Long,
pi
As Double, k As Integer, m As Double k = 1 pi = 0 m = 1 For i = 1 To Val(Text1)m = 1 / i pi = pi + k * m i = i + 1 k = -k Next Print "
π
/4
近似值
"; pi, 4 * pi End Sub 方法二:Priva...
VB计算圆周率近似值
π
/4=1-1/3+1/5+...+1/i一直到i<0.0000001编码...
答:
Private Sub Form_Click()Dim i&,
PI
Do Until 1 / i >0.0000001 i = i + 1 PI = PI + (-1) ^ (i - 1) / (2 * i - 1)Loop PI = PI * 4 Print "
π
="; PI End Sub 记得Do Until 的格式应该是后面直到表达式为真时停止吧 DO while是表达式为否时停止 ...
VB编程
谢谢啦 编写程序,
用近似
公式
求的近似值
(直到最后一项的绝对值小...
答:
Private Sub Command1_Click() k = 1 Do While 1 / (2 * k - 1) >= 10 ^ (-4) s = s + (-1) ^ (k - 1) / (2 * k - 1) k = k + 1 Loop Print "
π
≈"; 4 * sEnd Sub
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