帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
8 a, |" W& ?/ A9 GXY
6 F5 t5 I4 }# HOn Error Resume Next
( K1 B# S' v# m Dim x As Double, Y As Double
) O! x$ F- c& ~9 M6 x Randomize
+ y2 V+ q* }7 M0 r0 F6 m  
# K% v% `8 Q8 t. T        SC.Reset
; j5 B$ U2 K: A" H        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
# J0 Q( K+ e9 }) `- T/ b1 q! `         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
5 D( s* e# ^$ R! R* E' R4 r4 F          Next x
$ K. b9 J* F0 ~: hEnd 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)
With Picture1
  o& [. F9 o2 X. ^) K/ \* a  G.CurrentX = x
  D0 l" ~8 Z# D6 s/ W9 K" u2 i( h.CurrentY = Y
.ForeColor = RGB(0, 0, 255)
, |. R, j8 B) DEnd With
2 L$ V/ f- v' Y0 U2 u3 vPicture1.Print Word
End Function
, f' M! q+ Z, H6 ?'定义画点函数
  i  T: z% r3 a1 n" wPrivate Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
2 \7 J8 {/ \2 lEnd Function
8 w/ @4 B/ A# g4 V3 \& xSub XY() '建立直角坐标系
Picture1.DrawWidth = 1 '设置线条宽度
Picture1.Cls
& \/ N% _6 p- @'设定用户坐标系，坐标原点在Picture1中心
* g& o+ ]5 E2 V1 X! M1 U" \& UPicture1.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)
! N8 I6 h$ C; ?5 u$ {Picture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
Picture1.ForeColor = RGB(0, 0, 255)
2 }! o5 d( P8 r$ H& }& pPicture1.Print "X"
3 L! ]0 ~6 _' c( m" h'画 X 轴
, F$ Z- m2 X' G4 h' j. K' b4 NPicture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
2 |* x) J/ T* H: D8 B' {- x  A' A, Q7 }Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
Picture1.Print "Y"
'画 Y 轴
For lin = -9 To 9
Picture1.Line (lin, 0)-(lin, 0.25)
: |" ~9 ~1 y' ?! Rwor = PrintWord(lin - 0.5, -0.5, Str(lin))
Picture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
4 I3 s/ Z0 t& t1 _8 l4 G& F  awor = PrintWord(-0.9, lin, Str(lin))
- l* D; q$ Q1 @$ D. C5 U4 l3 M2 bEnd If
Next lin
, V! j# u; U' oPicture1.DrawWidth = 1
End Sub
- v# g5 f6 F& n8 S, n+ IPrivate Sub cmdPlot_Click()
XY
1 p: w3 v8 k. n$ p, L* `0 ?On Error Resume Next
+ w$ {2 N5 ?2 s: a; m1 J/ g1 b Dim x As Double, Y As Double
" V* V9 P- S$ N( I9 t# z Randomize
: e0 t6 A+ b# N/ ~' H. f  
        SC.Reset
8 D- D8 @, N+ {& w% }        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
4 Y6 s8 }+ {) w4 e         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P><>rivate Sub Command2_Click()
XY
& N5 i7 ]1 `5 |# G; JEnd Sub</P><>rivate Sub Command3_Click()
End
) `6 W) J% P3 g; x; TEnd Sub</P><>
Private Sub Form_Load()
Me.Caption = "美丽曲线——山东省商河一中路来民"
, l  Q/ C7 m( C* [Me.Show
: N( s5 B1 [! mMe.AutoRedraw = True
XY
- {4 W3 J6 s& w% n9 d( _End Sub
. R/ H' f4 H. b6 Q( f; P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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