Question

f(x)=12/x(x+4) Find the domain and range,

Answer 1

domain R numver set -{0,-4}
range (0, infinity)

Answer 2

@raheen the answer in the book is that y is all real numbers except -1 and -2... we have no idea how to do that.

Answer 3

ok , I think I read it in different way than what you mean, let me check that

Answer 4

Its calculus, am i in the wrong room?

Answer 5

no you are in the right room

Answer 6

i'll assume f(x)=12/(x(x+4))
domain=all values except values that make x(x+4)=0
so domain is all real numbers x except for x=0 and x=-4
range is all real numbers

Answer 7

f(x) = y
when you plug in -1 then -1 = x
So you can test from the points 0, 1, 2, 3, etc...

Answer 8

range always positive real numbers==> (0,+infinity)

Answer 9

edarosa
can you write the problem using the drawing board