帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
9 ?- R: a7 G* v- EXY
$ s, E, }- R" Z% R! TOn Error Resume Next
Dim x As Double, Y As Double
' T% N1 a1 A. R' W Randomize
, @7 S' t4 Y6 K  j  
3 l, [! ?  }8 ]4 H' v        SC.Reset
# F# N; ?* n* F! W& R* [8 ^        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
" P* O3 X9 y& c  ~: T) M8 J         Y = SC.Run("runthis", x)
         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
2 l- m& ?; Y7 m7 U( v- t6 C          Next x
End Sub</P>
8 s. l! g6 z7 N  A<>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)
With Picture1
.CurrentX = x
.CurrentY = Y
.ForeColor = RGB(0, 0, 255)
End With
3 b4 n( [7 M  w1 rPicture1.Print Word
) ]* y+ T$ D- J1 p/ t; \' yEnd Function
'定义画点函数
Private Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
End Function
Sub XY() '建立直角坐标系
9 j& }0 L/ v" t/ |7 H0 dPicture1.DrawWidth = 1 '设置线条宽度
1 ~) ~6 D$ Q$ W; Q* D7 A% h8 APicture1.Cls
'设定用户坐标系，坐标原点在Picture1中心
; I. A% ^& u- r% F# FPicture1.Scale (-10, 10)-(10, -10)
4 L$ D/ Y4 Z3 N9 n6 [2 ^Picture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
3 t, {  g$ @6 z) M& A9 gPicture1.Line -(9.5, 0.5), RGB(0, 0, 255)
Picture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
6 c5 j, C- |7 ~7 J4 H/ x+ a: \Picture1.ForeColor = RGB(0, 0, 255)
6 u6 U  b* ]+ _  H7 D1 pPicture1.Print "X"
$ G$ U$ C' W2 I2 L'画 X 轴
5 k6 I/ v5 X* a. s* B  k9 }" APicture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
. V# I; m1 z/ iPicture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
Picture1.Print "Y"
'画 Y 轴
3 p( y/ f- e9 e( c8 ~+ mFor lin = -9 To 9
3 [( j& m+ g( f$ o- v# `Picture1.Line (lin, 0)-(lin, 0.25)
wor = PrintWord(lin - 0.5, -0.5, Str(lin))
# r3 v5 `  Z- |: S: }9 d, m/ m7 ^" BPicture1.Line (0, lin)-(-0.25, lin)
/ s# c& v/ Z1 H4 A% n. GIf lin &lt;&gt; 0 Then
wor = PrintWord(-0.9, lin, Str(lin))
End If
  j8 x$ h  h1 n9 V( \Next lin
4 f. [; Q9 ?2 LPicture1.DrawWidth = 1
End Sub
( o- l* h6 x5 v, D1 g. R: {4 [4 `Private Sub cmdPlot_Click()
XY
  d" Q4 `! m/ L, J& B3 t3 I! ROn Error Resume Next
4 \+ j6 `" Z7 x/ [ Dim x As Double, Y As Double
: w+ {) }/ w" y& s% ]1 c% B  o Randomize
  
        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
0 i; b$ x* d1 F+ J) @8 Z       For x = -15 To 15 Step 0.001
6 A, |6 ^2 \, J; D( x$ t         Y = SC.Run("runthis", x)
. }3 t. ]) J0 R  g: r0 c& ^         DoEvents
( a8 t, u( h( `7 W          Picture1.PSet (x, Y), RGB(250, 0, 0)
. g9 |- c+ ^0 R# n          Next x
End Sub</P><>rivate Sub Command2_Click()
: @4 L0 z" N3 W) }' L( J  X; yXY
( H; Z, }: F1 W8 v$ x6 EEnd Sub</P><>rivate Sub Command3_Click()
End
0 b8 ~2 }+ Y  z, D9 a; l  o+ rEnd Sub</P><>
" [% u3 h4 H" W- r1 k; l% LPrivate Sub Form_Load()
" h6 @3 @+ f- R, fMe.Caption = "美丽曲线——山东省商河一中路来民"
Me.Show
Me.AutoRedraw = True
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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