Question

Given y^2=4px find p when one end of the focal width is 5sq.rt5 units from the vertex of the parabola

Answer 1

@jim_thompson5910

Answer 2

Read this page

http://www.its.caltech.edu/~mamikon/Parabella.html

specifically the part that says ` The focal width of parabola is 4p` (and look at the image they refer to)

Answer 3

let me know when you're done reading

Answer 4

i know that already but is how to go about using it

Answer 5

based on the diagram they show, what is 'p' referring to?

Answer 6

the focus point

Answer 7

close

Answer 8

no the distance from the vertex to the focus point

Answer 9

but not quite

Answer 10

yes

Answer 11

`one end of the focal width is 5sq.rt5 units from the vertex of the parabola`

translation

`the distance from the vertex to the focus is 5*sqrt(5)`

Answer 12

the parabola opens to the right like this

Answer 13

here is the focal width