Re: [R] deriv() to take vector of expressions as 1st arg?

Thanks a lot for the hints. The sapply method may work for me. But how can I extract just the ".grad" expression from the return value of the deriv function? (and secondly store in a matrix of expressions?) Thanks again. __ R-help@r-project.org mailing

[R] deriv() to take vector of expressions as 1st arg?

The deriv() function takes an 'expression' as its first argument). I was wondering if the this function can take an array or a vector of expressions as its first argument. Aside, I saw how to give a vector argument to the second argument. like to have something like: deriv(c(~x^2+y^3, ~x^5+y^6), c