F13 doc and range modification.

resources/F13Problem.html

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+<title>Schwefels's (sine root) function</title>
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+<h1 align="center">Schwefel's (sine root) function</h1>
+<center>
+<img src="images/f13-tex-500.jpg" width="650" height="64" aling="center">
+</center>
+<p>
+Schwefel's (sine root) function is highly multimodal and has no global basin of attraction. The optimum at a fitness of f(x*)=0 lies at x*=420.9687. Schwefel's sine root is a tough challenge for any global optimizer due to the multiple distinct optima. Especially, there is a deceptive nearly optimal solution close to x=(-420.9687)<SUP>n</SUP>.
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+<p>
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+<p>
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+<img src="images/f13-schwefels-sine-root.jpg" width="667" height="493" border="2" align="center">
+<br>
+Schwefels's sine root function in 2D within the co-domain -500 <= <i>x</i> <= 500.
+<p>
+
+<hr>
+More information about Ackley's function can be found at:
+<p>
+David. H. Ackley. <i>A connection machine for genetic hillclimbing.</i> Kluwer Academic Publishers, Boston, 1987.
+<p>
+Thomas Baeck. <i>Evolutionary Algorithms in Theory and Practice.</i> Oxford University Press, 1996.
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+</body>
+</html>