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?{variable_name}
![formula_expression]
cat(“z =”,...lower case output taken as scalar float, upper case as 1D array of float
branin <- function(x) { x1 <- x[1]*15-5 x2 <- x[2]*15 (x2 - 5/(4*pi^2)*(x1^2) + 5/pi*x1 - 6)^2 + 10*(1 - 1/(8*pi))*cos(x1) + 10 } cat("X = ",c( ?a , ?b ),"\n"); cat("z = ",branin(c( ?a , ?b )),"\n");
<CODE name="R" cplugin="file:./plugins/calc/R.cplugin.jar" command="R CMD BATCH" />
line in calculator.xml file inside ”<calculator>” tag,