帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
9 Y# _& v6 e. ~" a  l6 VXY
On Error Resume Next
- [3 F+ h4 C/ i9 r! Y. |, g Dim x As Double, Y As Double
Randomize
: x7 J- p, y, |3 \9 Q* V" e$ t  
( _, b2 x. r6 s& d9 w( k        SC.Reset
1 Q! j: L) M, |1 ]3 X        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
7 q& l( J1 V6 Z+ I4 `       For x = -15 To 15 Step 0.001
$ S$ x. y$ o* y! t         Y = SC.Run("runthis", x)
         DoEvents
7 O9 |% v  x4 g0 N; x% s, N          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
, K5 _8 c% Y. Q! ^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)
With Picture1
- L) n7 W! v5 ~8 ^& D( |5 O3 o.CurrentX = x
.CurrentY = Y
* o5 U  J. Y/ U/ w. g.ForeColor = RGB(0, 0, 255)
End With
Picture1.Print Word
End Function
% B  r/ G% Y4 ?'定义画点函数
Private Function DrawDot(Px, Py, Color)
# }- V1 R( C; a  T: G) E! U# l$ f: |Picture1.PSet (Px, Py), Color
5 e/ ]& X, c) ^$ B( S5 S( XEnd Function
Sub XY() '建立直角坐标系
6 m* v) U+ A# n5 E/ @Picture1.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)
1 t. m/ C( }" ?; @Picture1.Line -(9.5, 0.5), RGB(0, 0, 255)
Picture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
2 r( z/ p0 I  E- W! b# J: fPicture1.ForeColor = RGB(0, 0, 255)
% d2 [. ]" Q9 W% N, j/ jPicture1.Print "X"
'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
; Y) v: t/ p* d! D" T+ ^& }$ gPicture1.Line -(0.5, 9.5), RGB(0, 0, 255)
Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
+ R; B. B1 ~1 }Picture1.Print "Y"
& J( P1 M1 L4 b* D, E5 H'画 Y 轴
) `! N5 a* k! [4 q5 bFor lin = -9 To 9
' Y' |6 n( T! T6 s2 Q4 CPicture1.Line (lin, 0)-(lin, 0.25)
wor = PrintWord(lin - 0.5, -0.5, Str(lin))
1 L4 ?  m5 N2 P& Y* I1 f8 ^Picture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
% [0 L3 g) V# \2 I# W+ rwor = PrintWord(-0.9, lin, Str(lin))
End If
Next lin
% K$ F4 C/ y6 J1 G" P# [9 y) y8 `Picture1.DrawWidth = 1
End Sub
8 j7 Z* y6 B7 jPrivate Sub cmdPlot_Click()
XY
On Error Resume Next
Dim x As Double, Y As Double
/ o# R3 c% |: h7 B0 A, _2 P Randomize
$ I" n8 X5 J  @% o& B( m1 m  
        SC.Reset
3 k" G* [6 P5 o5 c% b1 {1 @% n        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
1 d9 t) ~1 k! a, u$ V* T       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
         DoEvents
$ S7 g$ [" @2 m; y          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
. }6 [$ \! V/ d! m1 s% c% ]End Sub</P><>rivate Sub Command2_Click()
XY
* W8 B  ~% J; FEnd Sub</P><>rivate Sub Command3_Click()
End
( Z- ~: E5 @5 J9 g  m) f, B1 nEnd Sub</P><>
Private Sub Form_Load()
Me.Caption = "美丽曲线——山东省商河一中路来民"
Me.Show
Me.AutoRedraw = True
0 j8 X2 V. n! m, k5 BXY
& {! s$ D. Q# g6 F+ W( z1 QEnd Sub
" m, ~! h7 ?/ {( l# b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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