I know this is probably really easy, but I can't get the answer.
Use the definition of a parabola and the distance formula to find the equation of the parabola with focus (1,2) and directrix x=-1
I know the answer is x=(y-2)^2/4. Can anyone tell me how to get there? Sorry to waste your...
This is my first post here so I hope I put it in the proper place.
Here's the basic info on the question.
parabolic reflector (like a tv dish) has diameter of 10cm, focus is 2 cm from the vertex. Find the depth.
Thanks in advance for an help. I've been stuck on this for a while! Getting...