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authorpriyanka2015-06-24 15:03:17 +0530
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+ // PG (206)
+
+// The following are the weight functions of most interest in the
+// developments of this text:
+
+// w(x)=1 a < = x < = b
+
+// w(x)=1/sqrt(1-x^2) -1 < = x < = 1
+
+// w(x)=exp(-x) 0 < = x < infinity
+
+// w(x)=exp(-x^2) -infinity < x < infinity \ No newline at end of file