I'm confused by this question and do not know where to start. If I use the chain rule and write , where is the length of the floor from the wall to point and where is the time, what would be?A ladder of length metres has one end leaning against a vertical wall. The other end rests on horizontal ground. When is at a height of metres, it slides down the wall at a rate of . How fast is the other end, , sliding along the horizontal ground? Answer:
I only know that when A is at a height of 4 metres, B must be at 3 metres away from the wall because of the pythagora's theorem.
Any help would be appreciated and thank you in advance.
The whole point of questions like this is that you introduce variables and set up the equation. Why have you written down an equation involving a pronumeral x when you don't know what x is!! (I had asumed you did not know an expression for x, but did know what x represented since it was your symbol in your equation).
I think you need to go back to your class notes and textbook and review all the material and examples for related rates of change.