2 Unit Revising Marathon (2 Viewers)

[SpiralFlex]

Re: 2 Unit Revising Marathon HSC '10

Square root of (x-x1)^2 + (y-y2)^2?

You can, but for this question it would not be required. You can see the distance straight away.

 

[asianese]

Re: 2 Unit Revising Marathon HSC '10

Am i the only one who finds this question invalid..?

I'm guessing you missed the limits.

oh geez sorry!

from 1/2 to 1

 

[Donwil]

no solution as the absolute value makes whatever is in between them positive, hence can not equal negative 5

 

[shravan_872]

Re: 2 Unit Revising Marathon HSC '10

tanx=3cotx

tanx=3/tanx

〖tan〗^2 x=3
tanx= + or - √3
x=π/3, 2pi/3, 4π/3, 5pi/3 with the domain of 0≤x≤2π