Elven

Use lagrange multiplier to find greatest and least distance from point (2,1,-4) to ellipsoid x^2 +5y^2 +z^2 =1. I tried solving it but i got a polynomial to power 4. Its too long to post my working so ill just dropbox it. dropboxcom/s/nobvp0739uk4yff/Phot...

1. Show that k=15 is congruent integer. where 0.5xy=km^2, x=r(u^2 - v^2) y=r(2uv) z=r(u^2 + v^2) x^2 + y^2 = z^2 2. how i solve Pell's equation using bhaskara II then brahmagupta method for x^2 - 67y^2 =1 Please help, exam on monday... :)

Turns out my lecturer tells everyone theres no 5y^2... welp i just wasted few hrs... I see... thanks for the help

Yea i know... but my lecturer wants us to solve it using that method.... actually i know how to use brahmagupta method... but i just cant get bhaskara II to transform into something like brahmagupta