帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
XY
On Error Resume Next
Dim x As Double, Y As Double
/ J2 m7 o; N4 r2 H1 b$ _  r Randomize
) b4 Y+ e! p4 v  A  
. I6 J% J0 M0 J$ [        SC.Reset
" o8 Y. R1 }! L, n" Q( Y  Z        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
/ n: ^. f' h, ]" }% I' j0 H6 o       For x = -15 To 15 Step 0.001
+ K& c5 Y( I* o& |5 N         Y = SC.Run("runthis", x)
         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P>
* f" V( r% n1 @5 v6 K) Q  ?<>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
$ l6 A6 b6 r" E* e1 R. U0 U; k.CurrentY = Y
.ForeColor = RGB(0, 0, 255)
End With
Picture1.Print Word
0 D  |. i; }+ f  f0 b1 B7 v1 EEnd Function
( C2 P2 i! `) w* B$ A5 }+ c) r'定义画点函数
Private Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
* q) G% {' B" `) D' L# X4 N! [End Function
Sub XY() '建立直角坐标系
0 H9 j/ K  H/ H% v1 bPicture1.DrawWidth = 1 '设置线条宽度
" o/ @: V) S0 }% I4 j$ v; E$ cPicture1.Cls
$ i; \  @+ C, |; A'设定用户坐标系，坐标原点在Picture1中心
( \% `) M: b  S  D  [* ePicture1.Scale (-10, 10)-(10, -10)
' R$ L, @. G+ K1 C6 z5 C! b1 lPicture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
Picture1.Line -(9.5, 0.5), RGB(0, 0, 255)
3 l/ h- K# M; a1 |# x/ w% jPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
% |3 H, S! N$ x) jPicture1.ForeColor = RGB(0, 0, 255)
! t: f' v/ m! C& _7 {Picture1.Print "X"
'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
+ b8 @7 I9 n4 X3 ?Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
7 N- N, j" l+ N/ K- OPicture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
Picture1.Print "Y"
) }; J6 G; f6 D$ ^  B8 H& ?( d'画 Y 轴
/ k  l3 a+ F$ ]2 J0 HFor lin = -9 To 9
Picture1.Line (lin, 0)-(lin, 0.25)
  O1 _6 j8 L" u' i7 ^wor = PrintWord(lin - 0.5, -0.5, Str(lin))
; J: j. z2 n9 ~! e% e% XPicture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
, y, L1 Q% ?& f% r9 b0 X% ewor = PrintWord(-0.9, lin, Str(lin))
End If
Next lin
Picture1.DrawWidth = 1
0 D6 a, U; `: d& j( T. r6 I# ?End Sub
0 t/ U, c, H9 r4 h; FPrivate Sub cmdPlot_Click()
XY
On Error Resume Next
Dim x As Double, Y As Double
Randomize
  
: i+ v" W6 M, F! T1 g' J# V        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
) Q4 x% V  a$ r' g9 g       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
% Q7 _5 w* l* u3 O2 p# E         DoEvents
* x, p& o4 \% N5 k/ ?3 O          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
; o8 Z2 ], w7 x; ^0 uEnd Sub</P><>rivate Sub Command2_Click()
8 n8 d$ ^' d' N( s3 Z9 _1 g, v; VXY
# \! a, K7 J0 ?# V9 rEnd Sub</P><>rivate Sub Command3_Click()
End
& l3 ~' H; \! N) |End Sub</P><>
! ^& G2 W+ X2 TPrivate Sub Form_Load()
& [. J& W7 }4 T% N$ {; |Me.Caption = "美丽曲线——山东省商河一中路来民"
: K8 {* H% h  U/ K- s4 _' l( t1 UMe.Show
Me.AutoRedraw = True
XY
3 D( y4 ]; W5 K+ b9 U+ qEnd 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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