Hey there, I want to plot 5 parabola functions, which happen to be f(x) = 0.25x² + 6,47x -32.6 g(x)=0.99x² -6x -195 j(x)= 0.77x² +14x -495 k(x)=0.001x² + 65x -785 l(x) = 0.9x² -2x -636
in the same graph. Sadly I even do not really understand how to plot just one graph... I found this code in the Internet, which plots a cos-function: >x <- seq( -10, 10, length = 1000) >plot(x, *sin(x)*, xlab="x-values", ylab="f(x)", type="l") >lines(x, cos(x), lty=3) >title( "Trigonometric functions", "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. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
