Question

medals! help with a couple problems

Answer 1

A radio telescope has a parabolic surface as shown below. If the telescope is 1 m deep and 12 m wide, how far is the focus from the vertex?

Answer 2

@ganeshie8

Answer 3

First observation - parabola is facing UP so the equation will be of form :
\[\large y = \dfrac{1}{4c}x^2\]
where, `Focus = (0, c)`

Answer 4

think a bit on how to find the value of c,
you need to use the given information and somehow find the value of c

Answer 5

what does \dfrac mean @ganeshie8

Answer 6

Oh looks there is an issue latex, let me take ascreenshot and attach the page im seeing

Answer 7

http://prntscr.com/4b3p5f

Answer 8

I don't see any \dfrac's at my end o.o

Answer 9

ohh yeah on my end it says that, but i know now