帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
) p$ m* r3 i1 CXY
; t, ^4 x" j1 COn Error Resume Next
Dim x As Double, Y As Double
1 L5 ~& E3 a( t- ~" Q, O Randomize
3 _- n  H: ^8 W! n" z  a  
$ m& s+ A  t8 s& j1 C7 d1 E        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
4 p* Z* X  M' @9 V4 Y7 D- _1 _- I         Y = SC.Run("runthis", x)
4 u- M+ X: g# Q  c  H         DoEvents
' y9 @. Z# Q/ U% `# U          Picture1.PSet (x, Y), RGB(250, 0, 0)
3 _; [7 i7 }: Q  q+ l          Next x
& I9 V' A! o+ P+ R( j7 G) CEnd Sub</P>
<>为仕么Y=LOG（X），SQR（X）也有图象（X轴负半轴），请帮忙</P>

USER001

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)
7 m/ L9 Q/ z' z% H$ @. b% IWith Picture1
.CurrentX = x
.CurrentY = Y
0 ^6 L: b5 T+ O8 t6 G+ H- X9 q4 C.ForeColor = RGB(0, 0, 255)
End With
8 q+ c+ Z0 d1 h% L& ePicture1.Print Word
End Function
- l/ z& ^! W) Z4 I'定义画点函数
2 ~3 t" @* L1 J5 |# b: q( d/ v6 iPrivate Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
End Function
Sub XY() '建立直角坐标系
& ]9 _- W0 m% d6 Y* mPicture1.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)
Picture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
Picture1.Line -(9.5, 0.5), RGB(0, 0, 255)
0 t% B9 a$ }- JPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
Picture1.ForeColor = RGB(0, 0, 255)
Picture1.Print "X"
) _, N3 k. t. X& L/ \'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
7 `: J! K9 G5 wPicture1.Print "Y"
% S3 J- d( s8 g6 ]/ k$ V/ c'画 Y 轴
For lin = -9 To 9
" m3 s- {+ v4 p! k: B% ZPicture1.Line (lin, 0)-(lin, 0.25)
: y/ o4 s9 d: i" ~9 }* kwor = PrintWord(lin - 0.5, -0.5, Str(lin))
: Q2 O( K" M4 E3 k+ bPicture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
# i6 A( D; @) w% |) e5 x5 D! Awor = PrintWord(-0.9, lin, Str(lin))
9 k8 ^7 k6 G: d, y1 ?# Y. N- mEnd If
& H+ p5 \2 N: j  N" J) S' eNext lin
Picture1.DrawWidth = 1
End Sub
Private Sub cmdPlot_Click()
" v/ M( o+ o/ {' S. B  M! nXY
On Error Resume Next
Dim x As Double, Y As Double
9 a% [' ?' U2 f. R$ c/ q Randomize
9 H2 N1 \9 v. Q. _  
        SC.Reset
. X. A4 E/ r/ l* {4 Z$ u& L& ?1 F        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
. q; f4 I% r  S1 b0 o         Y = SC.Run("runthis", x)
         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
. m8 N9 |$ @% y# Q          Next x
End Sub</P><>rivate Sub Command2_Click()
1 ]8 w% j( R( G1 LXY
End Sub</P><>rivate Sub Command3_Click()
9 ^" z, K! E$ Q- mEnd
2 m; v7 ?" Y% ~, ]End Sub</P><>
$ p4 u6 Q% a3 J) ~  O7 WPrivate Sub Form_Load()
' p8 L8 Q2 X4 I0 t: B. BMe.Caption = "美丽曲线——山东省商河一中路来民"
Me.Show
Me.AutoRedraw = True
/ z$ ?! a3 o) a8 u4 {XY
End 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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