parabola

[vast olive]

if the chord joining the points t1 and t2 to the parabola y^2 =4ax is normal to the parabola at t1 then prove that t1(t1+t2)=-2

[bronze osprey]

1. Ask your question and show the work you've done so far. If you've posted a screenshot of a question, specify which part you need help with.
2. Wait patiently for a helper to come along.
3. Once someone helps you, say thank you and close the thread with:

   +close
   

4. Feel free to nominate the person for helper of the week in #helper-nominations
5. Do not ping the mods, unless someone is breaking the rules.
6. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[pearl panther]

What? You can't do arithmetic on points.

Or if you can, you would need to define how it works, and the solution would probably also have to be an ordered pair.

[pearl panther]

Give us a screenshot of the original question.

[vast olive]

this is the original question

[pearl panther]

A screenshot would prove that.

[vast olive]

ok

[vast olive]

and wdym by this

[pearl panther]

Okay, so the original question is poorly written.

[pearl panther]

...you can add and multiply numbers. Are points numbers?

[vast olive]

yes?

[pearl panther]

How?

[vast olive]

t1 here represents (at1^2, 2at1)

@vast olive Do u know the diagram for this question

[vast olive]

i think so

ive drawn this

Show it

is this it?

[pearl panther]

Wait, are t_1 and t_2 supposed to be x-values? Or... what?

I guess hypothetically they could also be angles? This is the problem.

[vast olive]

So ur saying t1 and t2 lie on the parabola, but the question says a chord joins the two points to the parabola

[pearl panther]

I'm still confused on how we're supposed to add and multiply points to get an integer.

[vast olive]

oh

i misinterpreted the q aswell

so howd the actual diagram look like?

Idk either

[pearl panther]

This question is poorly written.

[vast olive]

Are u aware of the topic which this q comes under @vast olive

[vast olive]

yeah true

[vast olive]

normal to a parabola ig

T1 definately lies on the parabola

And there's a chord

And then t2 may or may not lie on the parabola

Yea screw this question