Question

calculate the gradient

Answer 1

\[f(x,y)=\sqrt{36x ^{2}+ 4 y ^{2}}\]

Answer 2

\[\Delta\f] =? triangle is supposed to be inverted

Answer 3

\[\Delta f(x,y) =?\]

Answer 4

diff. f w.r.t. x keeping y as constant
Fx= [1/ 2 sqrt(36x^2 + 4y^2) } *72x
similarly,
diff f w.r.t. y keeping x as constant
Fy= [1/ 2sqrt (36x^2 + 4y^2) } * 8y

combining these gives us our gradient vector

Answer 5

and u might have used wrong symbol for gradient ..its inverse triangle

Answer 6

yes. i got tht.
answer confirmed =)
yes i had mentioned it above tht there should ve been inverted triangle

Answer 7

pls fan me ..to keep the help sharing

Answer 8

ok but b4 that. an imp question.

Answer 9

sure

Answer 10

u know directional derivative completely? and Lagrange multiplier too?

Answer 11

i know the first one..havent touched the latter one yet..

Answer 12

oh.

Answer 13

?

Answer 14

well the question was requiring Lagrange multiplier

Answer 15

:(

Answer 16

so what do i need to do to get ur vote? hahha

Answer 17

=D answer my next question if needed =P