Computing the first derivative of a product function with two factors and randomly-drawn parameters, using the product rule. In addition to the correct solution, four false alternatives are generated through
num_to_schoice()by providing two common errors along with a range and minimal delta for two further random solutions.
Verbatim R input/output:
(Note that the HTML output contains mathematical equations in MathML. It is displayed by browsers with MathML support like Firefox or Safari - but not Chrome.)
library("exams") set.seed(1090) exams2html("deriv2.Rnw") set.seed(1090) exams2pdf("deriv2.Rnw") set.seed(1090) exams2html("deriv2.Rmd") set.seed(1090) exams2pdf("deriv2.Rmd")