Question

Determine the domain:

f(x)=sqrt 5-x
and
f(x)=sqrt -2/x^2+2x-3

Answer 1

\[sqrt{5-x}\]

Answer 2

still not working. ok for the first one you must have
5-x>= 0 so 5>=x or x<=5

Answer 3

because apparently for real numbers you cannot take the square root of a negative number.

Answer 4

all numbers except -3 and 1

Answer 5

in fact the domain of a function is supposed to be specified with the function. for the second one the denominator cannot be 0 and dioscarr has the answer.

Answer 6

factor the bottom and equal everything to zero