Math, asked by KaurPrabhleen, 1 year ago

show that the points (at1^2 ,2at1) , (at2^2,2at2) , (a,0) are colinear if t1* t2 = -1

Explode: Very Nice Question Sir

Explode: Sir which class do you read ???

Answers

Answered by Anonymous

Area of the triangle formed by these three points must be since they are collinear.

Δ = 1/2 | at1² (2at2) + at2² (-2at1) + a(2a)(t1-t2) |
= 1/2 | 2a² t1² t2 - 2a² t1 t2² + 2a² (t1-t2) |
= a² | t1²t2 - t1t2² + t1 - t2 |
= a² | t1t2(t1-t2) + (t1-t2) |
= a² | (t1-t2) (t1t2 -1)|
= a² | (t1-t2) (-1 -1)|
= a² | (t1-t2) (-2)|

Anonymous: okay tell me whats the mistake in there

Explode: I said na Sir

Explode: I forgot this

Explode: Trust me please Sir

Anonymous: If you know that .. tell me.. i did a mistake.. so i have to correct it

Explode: Okay wherever I can I will definitely tell you

Explode: May you please tell me your standard ???

Anonymous: 12

Explode: Ooo

KaurPrabhleen: If points are collinear, then the area of triangle made by them is equal to zero

Answered by jashanjatana12274

there is ur answer.........

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