I'm surprised these are allowed in exams at all. Can someone who wrote such exams tell me what sort of questions were asked for which graphing was useful? Clear

I'm surprised these are allowed in exams at all. Can someone who wrote such exams tell me what sort of questions were asked for which graphing was useful? Clearly there would be no point in asking many curve-sketching questions. In teaching, I can see the utility of sometimes being able to ask the computer. But ideally not a cheap computer from the 90s. And of sometimes being forced to do without. But in exams, where standardization matters, why not restrict to basic 4-function calculators?