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...uot;, "sin(x) and cos(x)") If I replace the sin(x) thing (bold) with one of my functions, it doesn't work and reports an unwanted character. Can somebody help me with that? -- View this message in context: http://r.789695.n4.nabble.com/Simple-Problem-Plotting-mathematical-functions-tp4552668p4552668.html Sent from the R help mailing list archive at Nabble.com.