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<FONT SIZE="2" COLOR=#660033>Microsoft® Visual Basic® Scripting Edition</FONT><BR>
<FONT SIZE="5" COLOR=#660033><B>派生数学函数</B></FONT>
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<FONT SIZE="2"> <A HREF="vbstoc.htm">语言参考</A> <BR>
<!--START PAGE START--><!--START PAGE END--><A HREF="16.htm">版本 1</A> <P></FONT>
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<P><FONT SIZE="2"><A HREF="227.htm">请参阅</A></FONT>
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<H5>描述</H5>
<BLOCKQUOTE>下列是由固有数学函数派生的非固有数学函数：<P>
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<TD><FONT SIZE="2"><b>函数</b></FONT></TD>
<TD><FONT SIZE="2"><b>派生的等效公式</b></FONT></TD></TR>
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<TD><FONT SIZE="2">Secant（正割）</FONT></TD>
<TD><FONT SIZE="2">Sec(X) = 1 / Cos(X)</FONT></TD></TR>
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<TD><FONT SIZE="2">Cosecant（余割）</FONT></TD>
<TD><FONT SIZE="2">Cosec(X) = 1 / Sin(X)</FONT></TD></TR>
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<TD><FONT SIZE="2">Cotangent（余切）</FONT></TD>
<TD><FONT SIZE="2">Cotan(X) = 1 / Tan(X)</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Sine（反正弦）</FONT></TD>
<TD><FONT SIZE="2">Arcsin(X) = Atn(X / Sqr(-X * X + 1))</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Cosine（反余弦）</FONT></TD>
<TD><FONT SIZE="2">Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Secant（反正割）</FONT></TD>
<TD><FONT SIZE="2">Arcsec(X) = Atn(X / Sqr(X * X - 1)) + Sgn((X) -1) * (2 * Atn(1))</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Cosecant（反余割）</FONT></TD>
<TD><FONT SIZE="2">Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) - 1) * (2 * Atn(1))</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Cotangent（反余切）</FONT></TD>
<TD><FONT SIZE="2">Arccotan(X) = Atn(X) + 2 * Atn(1)</FONT></TD></TR>
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<TD><FONT SIZE="2">Hyperbolic Sine（双曲正弦）</FONT></TD>
<TD><FONT SIZE="2">HSin(X) = (Exp(X) - Exp(-X)) / 2 </FONT></TD></TR>
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<TD><FONT SIZE="2">Hyperbolic Cosine（双曲余弦）</FONT></TD>
<TD><FONT SIZE="2">HCos(X) = (Exp(X) + Exp(-X)) / 2</FONT></TD></TR>
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<TD><FONT SIZE="2">Hyperbolic Tangent（双曲正切）</FONT></TD>
<TD><FONT SIZE="2">HTan(X) = (Exp(X) - Exp(-X)) / (Exp(X) + Exp(-X))</FONT></TD></TR>
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<TD><FONT SIZE="2">Hyperbolic Secant（双曲正割）</FONT></TD>
<TD><FONT SIZE="2">HSec(X) = 2 / (Exp(X) + Exp(-X))</FONT></TD></TR>
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<TD><FONT SIZE="2">Hyperbolic Cosecant（双曲余割）</FONT></TD>
<TD><FONT SIZE="2">HCosec(X) = 2 / (Exp(X) - Exp(-X))</FONT></TD></TR>
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<TD><FONT SIZE="2">Hyperbolic Cotangent（双曲余切）</FONT></TD>
<TD><FONT SIZE="2">HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) - Exp(-X))</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Hyperbolic Sine（反双曲正弦）</FONT></TD>
<TD><FONT SIZE="2">HArcsin(X) = Log(X + Sqr(X * X + 1))</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Hyperbolic Cosine（反双曲余弦）</FONT></TD>
<TD><FONT SIZE="2">HArccos(X) = Log(X + Sqr(X * X - 1))</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Hyperbolic Tangent（反双曲正切）</FONT></TD>
<TD><FONT SIZE="2">HArctan(X) = Log((1 + X) / (1 - X)) / 2</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Hyperbolic Secant（反双曲正割）</FONT></TD>
<TD><FONT SIZE="2">HArcsec(X) = Log((Sqr(-X * X + 1) + 1) / X)</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Hyperbolic Cosecant（反双曲余割）</FONT></TD>
<TD><FONT SIZE="2">HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) +1) / X)</FONT></TD></TR>
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<TD><FONT SIZE="2">Inverse Hyperbolic Cotangent（反双曲余切）</FONT></TD>
<TD><FONT SIZE="2">HArccotan(X) = Log((X + 1) / (X - 1)) / 2</FONT></TD></TR>
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<TD><FONT SIZE="2">以 N 为底的对数</FONT></TD>
<TD><FONT SIZE="2">LogN(X) = Log(X) / Log(N)</FONT></TD></TR></TABLE></BLOCKQUOTE><p>
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