帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
' Q8 x4 S/ X  S8 H  P& uXY
On Error Resume Next
; X! Q" x3 \0 J' |) I Dim x As Double, Y As Double
Randomize
8 |+ \' @! e' _$ m1 c6 D# F1 X6 J  
        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
9 ]! b2 ?+ w1 H5 p. K( w       For x = -15 To 15 Step 0.001
! ~; n1 t* L7 Q! P         Y = SC.Run("runthis", x)
         DoEvents
5 a5 y' h5 |# ?7 q$ f# q          Picture1.PSet (x, Y), RGB(250, 0, 0)
( ?# \$ K' k7 w- Z! W          Next x
" f. _% g% w8 S6 ?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)
; x+ c8 Q+ k3 K5 D; o4 ?4 LWith Picture1
.CurrentX = x
9 f& m% n8 z2 n2 S4 Q.CurrentY = Y
/ b, i! S! m9 g1 B.ForeColor = RGB(0, 0, 255)
! ]  I6 A* o( l& C2 w4 J1 {End With
7 e7 h' v7 G4 I7 UPicture1.Print Word
; I3 C$ _2 K7 }5 q% [& bEnd Function
- d9 \# \% B) R, h'定义画点函数
Private Function DrawDot(Px, Py, Color)
! m" n1 F; Q) A% D9 p& ZPicture1.PSet (Px, Py), Color
End Function
Sub XY() '建立直角坐标系
  K& x8 k# t4 M# u! i, g0 oPicture1.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
2 v! H6 \+ s+ O  nPicture1.Scale (-10, 10)-(10, -10)
- M& _" Z; T7 R+ H* T4 x- iPicture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
# Y# r! ^( t( Z* l! YPicture1.Line -(9.5, 0.5), RGB(0, 0, 255)
: M8 [/ @9 G4 x: X+ R' W3 \8 G! x, lPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
Picture1.ForeColor = RGB(0, 0, 255)
0 J+ T, g5 @' P6 m  iPicture1.Print "X"
'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
7 S5 }, q, I( G$ ]) k& `2 s# s* LPicture1.Line -(0.5, 9.5), RGB(0, 0, 255)
Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
Picture1.Print "Y"
+ w' x! U- d8 Q2 N$ P'画 Y 轴
For lin = -9 To 9
Picture1.Line (lin, 0)-(lin, 0.25)
. b9 {$ P0 `; K+ P+ q7 ywor = PrintWord(lin - 0.5, -0.5, Str(lin))
, n0 r' L. h, {, _3 PPicture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
wor = PrintWord(-0.9, lin, Str(lin))
. H! Y+ \) g, ^! G5 H( W: gEnd If
( k3 Z# G% i" |Next lin
Picture1.DrawWidth = 1
End Sub
Private Sub cmdPlot_Click()
; p( o/ x5 w' i% A6 I5 ^6 aXY
/ Z& a% \# D; k7 x0 ROn Error Resume Next
6 ^2 j1 u" Y. l1 o% [0 J2 { Dim x As Double, Y As Double
1 r/ d# K+ x4 O* N: q6 _ Randomize
  
' u. U; n, m6 h8 v* v6 C4 r+ m        SC.Reset
. P+ @( T9 H9 N% o& H/ l6 [! Q        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)
3 l: I7 T! q( j0 p) Y         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
! o  L( {$ F$ t9 W5 Z) l/ M/ x  n& q          Next x
* E6 u, \* ^0 V8 n2 eEnd Sub</P><>rivate Sub Command2_Click()
/ H$ E2 ^- o& VXY
3 K) _  {, t" r) ?- n! O! U1 _6 MEnd Sub</P><>rivate Sub Command3_Click()
$ N) O9 Y7 @* I& ]End
End Sub</P><>
7 O' t& Q! c! |  B2 }- t! I6 bPrivate Sub Form_Load()
" w) j: k5 i6 P; w# HMe.Caption = "美丽曲线——山东省商河一中路来民"
Me.Show
Me.AutoRedraw = True
XY
( d6 |: K# Z1 Z/ v( W1 UEnd Sub
- e* ^! e+ r; I# ~) u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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