帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
% y7 D3 u9 ?7 DXY
On Error Resume Next
% c' k+ w; G2 w. S# { Dim x As Double, Y As Double
3 k1 E8 r0 l% h7 g  m Randomize
  
$ w& z8 P, Y) o( G4 f* V6 b7 A        SC.Reset
9 T7 S. r0 x2 }; i5 P        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
. t5 `: W$ _. X+ V- w+ {- w       For x = -15 To 15 Step 0.001
6 ^! N7 x$ g4 j8 T  H         Y = SC.Run("runthis", x)
         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
7 p$ }6 l7 d* l7 N( `% L4 xEnd 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
# Z% }7 @* E. J+ B* z" L.CurrentX = x
.CurrentY = Y
6 v8 k! c" f$ X8 ~% b% e.ForeColor = RGB(0, 0, 255)
End With
# M( n# U# L# V1 h0 IPicture1.Print Word
End Function
'定义画点函数
% C- k9 R  i$ ]Private Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
& R9 m- a; n4 N4 m9 F- MEnd Function
# v: _  x& b1 n, xSub XY() '建立直角坐标系
Picture1.DrawWidth = 1 '设置线条宽度
+ D: l! }$ R" n8 n6 P8 hPicture1.Cls
'设定用户坐标系，坐标原点在Picture1中心
# `4 S0 }; B, {/ QPicture1.Scale (-10, 10)-(10, -10)
( S. }! i* \8 H- E" Q* A, CPicture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
; x$ O* h7 \1 N: [  sPicture1.Line -(9.5, 0.5), RGB(0, 0, 255)
9 }) `4 I4 @: m+ O; IPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
& q6 R: h1 v* sPicture1.ForeColor = RGB(0, 0, 255)
7 [5 r/ ^0 |! X' l8 rPicture1.Print "X"
/ _+ g3 x+ }2 ~# [+ v'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
, J- Z" }% s: u. A# Z' o! H9 OPicture1.Line -(0.5, 9.5), RGB(0, 0, 255)
& R( E0 D) N# h' L- P' sPicture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
) L+ [# H1 f( R6 k8 r  vPicture1.Print "Y"
9 u8 Q; c( o0 p! d8 V0 D# E6 R, V- j'画 Y 轴
5 L+ s. ?9 G( y0 d" w  N! I3 ~For lin = -9 To 9
Picture1.Line (lin, 0)-(lin, 0.25)
$ n. x5 i' V5 B; |% ^. Swor = PrintWord(lin - 0.5, -0.5, Str(lin))
Picture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
wor = PrintWord(-0.9, lin, Str(lin))
End If
  y  l( K2 R. {( w: t/ zNext lin
Picture1.DrawWidth = 1
2 ?, \  S( r+ |' e) i# t4 MEnd Sub
/ m6 v5 s+ @" \4 c1 I& x" Z# KPrivate Sub cmdPlot_Click()
XY
! W: Z0 R8 x+ }( i" tOn Error Resume Next
Dim x As Double, Y As Double
Randomize
9 u* a! l. a2 `5 [' f  
6 `, [3 X3 |! z# }        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
3 U0 @7 L, r' C- {! f       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
+ k- j  U8 N: o$ G1 l+ I) Q         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
" [3 b" x, S0 m$ ?/ D          Next x
End Sub</P><>rivate Sub Command2_Click()
XY
$ T  I/ v, c7 {0 V% `. t/ eEnd Sub</P><>rivate Sub Command3_Click()
& p4 J1 \  a" f0 l* p- FEnd
8 A' O  I2 j. u3 OEnd Sub</P><>
' d0 V2 V* c7 o7 JPrivate Sub Form_Load()
  V+ o3 ~+ f" |, f, NMe.Caption = "美丽曲线——山东省商河一中路来民"
! S# t; s$ L8 p7 S& B0 Y& N7 lMe.Show
# v2 d. s5 A5 G' I7 wMe.AutoRedraw = True
/ D, q- G8 ~2 D# I/ @XY
End Sub
8 ~  O0 [; p0 K' v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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