I'm having so much difficulty with this. The techniques used by my teacher are very difficult for me to grasp. Last semester I failed calculus and I didn't understand this part either. The rest of the material I understand better but this one subject is making it very difficult for me to solve related rates problems.
For example, I know some formulas for related rate problems but I cannot get them on my own and so sometimes when they ask for just one type of formula I'm stuck because I cannot crack the code so to speak.
I could really use some help in understanding this subject better. Thanks.