In exams.mylearn: Question Generation in the 'MyLearn' XML Format

tab <- mtcars[1:10, ]
boxdat <- scale(1:30)

Question

What is the derivative of $f(x) = x^{r 1} e^{r 2 x}$, evaluated at $x = r 4$? A formula is $$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.$$

Here comes a table

knitr::kable(tab)

Here comes some R output:

t.test(1:10)

Some R code:

dat <- 1:20
s <- 0
for (i in seq_along(dat)) {
  s <- s + dat[i]
}

Here's a boxplot

boxplot(boxdat, main = "Beauty")

A code block that is not evaluated:

variable <- rnorm(100)
var(variable)
mean(variable)

Try out some extra characters: Once & Andy's book.

Answerlist

• r fmt(1+1e-4)
• Hey
• Yo
• Foo
• Bar

Solution

Some feedback.

Meta-information

exname: First Question extype: mchoice exsolution: 10000 exshuffle: TRUE

exams.mylearn documentation built on April 20, 2021, 1:05 a.m.