Find the curvature of r(t) at the point

All I can say is thank you for this beautiful gift, it helps to explain problems a lot. Good app on solving mathematics problem, i don't know who the developers are, but I know they are geniuses, the solution steps are simple enough to follow and it always gives you an answer.

This is the first app that realy works i love it so much and i get a+ every time i use it i guess its cheating but as long as i dont get caught. To much of a good thang is bad though just don't cheat on you're test/quiz with it just probably use it for studyingand expecially don't use it on you're final exams or big tests.

This app consistently surprised me by recognizing my hand writing and offering every possible solution across the maths spectrum, i will suggest adding the possibility to calculate 2 to the power of 52 and higher, i was surprised at how helpful this app was! Even when I wasn't sure what I was doing, I could look at what my results are from snapping a pic of my equation and eventually find out the way of which this app went about getting the correct answer.