Hints can be provided to students, based on the last response given, as well as the history of responses given. Here is an example of a hint produced by a Formula Response problem.
- --What is the equation of the line which passess through ($x1,$y1) and -($x2,$y2)?
- -The correct answer is $answer. A common error is to invert the equation for the slope. Enter -$wrongans to see a hint.
- --A symbolic math response problem presents one or more symbolic math -input fields for input. Correctness of input is evaluated based on -the symbolic properties of the expression entered. The student enters -text, but sees a proper symbolic rendition of the entered formula, in -real time, next to the input box. -
- -This is a correct answer which may be entered below:
-cos(theta)*[[1,0],[0,1]] + i*sin(theta)*[[0,1],[1,0]]
- -