I have a calculus instructor who had thrown down a resistor simplification problem involving time.
What she didn't realize is that their is a large number of engineering students in her class.
So, in her problem one of us went up to the board and converted the simplification law she was using to something much simpler. (We've a lot of short cuts. Who can blame us?)
The simplified version disregards time in regards to dervitives and has you calculate the maximum and minimum output. Then allows you to simply subtract to give you the correct answer. It takes half a minute.
She was kinda floored, cause it took her nearly 15 minutes to perform the needed steps with calc.
Anyone else have similar things occur to them?