Question

1.for non zero real nos: x and y the equality [x+y]^2 sec^2\[\theta\]=4xy is possible only when
a)x+y=1 b)x+y=-1 c)x-y=0 d)x+y=0

Answer 1

for non zero real nos: x and y the equality

[x+y]^2 sec^2(θ) = 4xy, hmmm

Answer 2

we could back pedal into it to see maybe?

Answer 3

???

Answer 4

what is theta, anything?

Answer 5

angle

Answer 6

good, cause i was thinking it might be been soup for a minute :)

Answer 7

answer?

Answer 8

i dunno an answer; but is sounds plausible that when x and y are opposites that you get a few zeros

Answer 9

then again ....

Answer 10

y = x; [x-x]^2 sec^2(θ) = 4x^2 not right

Answer 11

myin might be a good bet for doing these number bending stuffs

Answer 12

???

Answer 13

i neeed the answer

Answer 14

openanswer.com is 3 doors down; this is more of a study group in my eyes

Answer 15

at any rate, i got no answers for it, so good luck with it ;)

Answer 16

helppppp

Answer 17

try wolfram alpha

Answer 18

(not a user; a site)

Answer 19

helpp

Answer 20

i have no idea

Answer 21

from what topic or book does this question come?

Answer 22

im assuming its the help me now i need an answer book; just a guess tho

Answer 23

maybe it is the book of soup (none for you though)

Answer 24

so it does not have to hold for all real x right?
it holds for some x that i see
if x=y,
then we have
(2x)^2sec^2(theta)=4x^2
4x^2sec^2(theta)=4x^2
and we know sec^2(theta) can be 1 sometimes since cos^2(theta) can be 1

Answer 25

we can try
\[x=y\] right?

Answer 26

oh i am a little slow i see. hello myininaya

Answer 27

yes i think for some values of theta x = y will work

Answer 28

hey satellite
i'm tired
i think i'm gonna eat and watch tv

Answer 29

oh you wrote that out too. ok done. since it says "only possible if" then you must be right.
is antiques roadshow on?

Answer 30

now the question is, why not for any other value...

Answer 31

:(

Answer 32

:(

Answer 33

guys

Answer 34

:(

Answer 35

u cant answer?????

Answer 36

helpppp

Answer 37

i think we agreed to x=y