帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
XY
) y6 j6 R0 z4 q* ]" hOn Error Resume Next
Dim x As Double, Y As Double
Randomize
7 U% [9 I' K& t; b1 i( h* j  
4 W6 I  i7 G. m& \7 L7 N        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 e/ x$ j0 l7 L) u/ e         Y = SC.Run("runthis", x)
9 b3 v0 l# o% L9 s* P. T: v7 X         DoEvents
/ S. ~/ l( Q+ {2 U          Picture1.PSet (x, Y), RGB(250, 0, 0)
# s4 U& E: w- q$ ?: A) k          Next x
End 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)
5 T0 G  u6 m0 Y* P1 j1 qWith Picture1
4 H( Q( H/ l( S  L.CurrentX = x
.CurrentY = Y
.ForeColor = RGB(0, 0, 255)
End With
7 N9 z$ Z. l8 pPicture1.Print Word
/ u5 }( K' H( cEnd Function
'定义画点函数
2 b7 C( Q7 F8 F" [  L8 O' aPrivate Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
/ X6 `* O' x! Y# L# j7 `End Function
Sub XY() '建立直角坐标系
. F, [: z3 m1 ]5 z. }) |; O! FPicture1.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
3 Q8 W1 {$ ?, C/ E4 G/ ]$ m) LPicture1.Scale (-10, 10)-(10, -10)
. H; l' _) C) DPicture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
Picture1.Line -(9.5, 0.5), RGB(0, 0, 255)
: _' W& R: Q& N: c# o# N! aPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
, _. P8 {/ X: a& N  _7 R3 N1 iPicture1.ForeColor = RGB(0, 0, 255)
Picture1.Print "X"
: T; @3 B# w* g, d8 A'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
7 I; w/ H4 c1 @( D1 g/ fPicture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
: n1 n5 @! u  FPicture1.Print "Y"
'画 Y 轴
For lin = -9 To 9
0 n2 `4 j. o6 BPicture1.Line (lin, 0)-(lin, 0.25)
wor = PrintWord(lin - 0.5, -0.5, Str(lin))
2 T( _; U5 L# CPicture1.Line (0, lin)-(-0.25, lin)
  L3 _  j5 i( x: Q9 w4 B& HIf lin &lt;&gt; 0 Then
wor = PrintWord(-0.9, lin, Str(lin))
0 K* N+ U# c8 w6 SEnd If
, s  Y+ E6 U: s! r( i* v4 RNext lin
5 S- W' u5 R, ]Picture1.DrawWidth = 1
0 X% U  n- T, L$ V) f3 \: V7 bEnd Sub
Private Sub cmdPlot_Click()
XY
3 ~$ w3 K7 ]4 Z9 C5 q; pOn Error Resume Next
Dim x As Double, Y As Double
Randomize
$ m" R* \; e5 q, L5 i  
8 Z% Z/ g! k9 C0 o: l8 S        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
" n3 s0 X2 |6 p, A# U$ f       For x = -15 To 15 Step 0.001
, r! Q0 P3 W1 O& n" w' g) c8 t         Y = SC.Run("runthis", x)
         DoEvents
3 z0 T- A* k2 o  f          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P><>rivate Sub Command2_Click()
6 ?: |% y, |' K. O" YXY
End Sub</P><>rivate Sub Command3_Click()
End
End Sub</P><>
Private Sub Form_Load()
3 r5 Y7 k6 O* G- g9 }/ c, [6 pMe.Caption = "美丽曲线——山东省商河一中路来民"
& V/ r* \( A% W( d; v7 E+ h: oMe.Show
6 J3 l  K7 M5 c$ R/ j5 Y' zMe.AutoRedraw = True
6 V" S- n' h% H$ gXY
End Sub
8 m3 O9 X4 r9 I( s1 C$ M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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