Question

find domain and ?range of two variables function
f(x,y)=square root of y-x ?

Answer 1

plzzzzzzzzz ans me

Answer 2

think about the restrictions on x and y for their difference to be a positive number

Answer 3

^he's right

Answer 4

sory i din't under stand

Answer 5

domain is the set of values of x for which function is defined...
which is \[\left\{ \left( x,y \right)\epsilon R ^{2} : y \ge x \right\}\]

Answer 6

how would you make y-x=positive number

Answer 7

y=x

Answer 8

lets see how....if y<x in your function, you'll get a negative number in the square root...which is undesirable

Answer 9

if we take squre on both side m r rite ?

Answer 10

nope

Answer 11

so?

Answer 12

do you know what is DOMAIN?

Answer 13

these are two variable function

Answer 14

`

Answer 15

yea...A domain is the set of numbers which are valid values for the independent variables

Answer 16

mens imaginar are not in domain ?

Answer 17

yup

Answer 18

ok

Answer 19

when is y-x negative?

Answer 20

indepent nd dependent what is difference b/w both

Answer 21

<0 then negative ? m r rite

Answer 22

???????????

Answer 23

yea so domain is 'those values of y and x' for which y-x> or equal to 0 (non-negative)...
solve y-x>or equal to 0
y>or equal to x

Answer 24

are we clear on domain?

Answer 25

now clear buddy

Answer 26

Good

Answer 27

about range ?

Answer 28

now the range is the set of value of function you get when you put values you got in domain...

Answer 29

If you put y> or equal to x in you function do we get positive f(x,y) or negative?

Answer 30

positive

Answer 31

coz < 0r = sign

Answer 32

right...positive..so you range will be
\[\left\{ f \in R : f \ge 0 \right\}\]

Answer 33

ok thanxxxxxxxxxxxxxxxxxxxxx alotttttttttttt

Answer 34

aha welcomio

Answer 35

:)