帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
$ R6 h, T8 ^; tXY
On Error Resume Next
Dim x As Double, Y As Double
' J* j  a7 A* L* T4 h; J$ r9 v Randomize
  q1 s0 Q: b3 V& t% c' ~+ A( M4 W  
+ V( {$ I5 ~& U0 _7 |; p% r        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
+ X- m8 `4 U& u  q9 F: d! W2 G       For x = -15 To 15 Step 0.001
9 l: j/ i8 J* L9 A         Y = SC.Run("runthis", x)
6 y. I9 Z) b: ~' R+ G1 o         DoEvents
  u( B4 f0 K6 Y9 |7 P) o. |          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P>
" z+ J( Y9 o9 X3 ?- A0 b% P: J: d: o<>为仕么Y=LOG（X），SQR（X）也有图象（X轴负半轴），请帮忙</P>

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把完整代码发上来

llm3-1415926

<><b>帮帮忙，跪下谢谢斑竹，VB</b></P><>rivate Function PrintWord(x, Y, Word As String)
With Picture1
.CurrentX = x
6 W5 j9 p1 U1 D.CurrentY = Y
6 T/ {& K- J$ K% O$ b' w# t.ForeColor = RGB(0, 0, 255)
End With
' ^2 j5 U9 S$ p$ y4 P* W; G3 L. [Picture1.Print Word
End Function
'定义画点函数
9 z9 X2 |, g, [8 MPrivate Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
End Function
Sub XY() '建立直角坐标系
" n9 M1 g! j+ lPicture1.DrawWidth = 1 '设置线条宽度
Picture1.Cls
'设定用户坐标系，坐标原点在Picture1中心
Picture1.Scale (-10, 10)-(10, -10)
( J4 t0 _+ _* x$ w+ Y/ ~Picture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
Picture1.Line -(9.5, 0.5), RGB(0, 0, 255)
: n$ i5 S3 Z" A. Y! gPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
Picture1.ForeColor = RGB(0, 0, 255)
( e# V! r2 Y2 S" T4 {! fPicture1.Print "X"
'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
' I, N( H6 L) a3 Y# o) n( a7 aPicture1.Line -(0.5, 9.5), RGB(0, 0, 255)
' n! ]  ]. S7 ~Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
0 K* X2 Z3 a5 SPicture1.Print "Y"
'画 Y 轴
# K3 h7 {  T+ U2 B* r$ Q/ {& wFor lin = -9 To 9
6 ]0 n0 ]) y" F: [  N, g& xPicture1.Line (lin, 0)-(lin, 0.25)
wor = PrintWord(lin - 0.5, -0.5, Str(lin))
; v  _- r3 T( SPicture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
- |* L7 K5 v0 o* X3 ^! kwor = PrintWord(-0.9, lin, Str(lin))
End If
& u6 I6 u- }) qNext lin
Picture1.DrawWidth = 1
End Sub
Private Sub cmdPlot_Click()
1 y9 @4 s' U0 R+ WXY
On Error Resume Next
Dim x As Double, Y As Double
6 @. k9 C$ C4 ? Randomize
  
2 X3 R  o) C( g+ y        SC.Reset
# ~# M  e6 N- i        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
' `6 v; X5 j" F8 T  B       For x = -15 To 15 Step 0.001
  C2 L! x" I) _( y5 w; i7 L         Y = SC.Run("runthis", x)
         DoEvents
5 \1 X6 d  w! e, z6 v; r% g          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P><>rivate Sub Command2_Click()
" x! r2 i2 f# f5 OXY
; v: e6 K/ X7 w3 g" m& ]End Sub</P><>rivate Sub Command3_Click()
End
8 H1 ^. Y2 u% O" H, R) X4 IEnd Sub</P><>
Private Sub Form_Load()
* U0 d# o  {9 t2 X  f0 S* JMe.Caption = "美丽曲线——山东省商河一中路来民"
Me.Show
( ^; ~/ s' k( s! C) {8 OMe.AutoRedraw = True
XY
4 W2 I/ ?. Q9 C) t9 R6 hEnd Sub
控件</P><>为仕么Y=LOG（X），SQR（X）也有图象（X轴负半轴）， SC为MS.SCRIPT.control请帮忙,谢谢斑竹,跪谢！！！</P>

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