Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2013-01-23 07:22:02

skylor b
Guest

domain and range

domain of a figure is [0,2]
range is [0,1]

How do I find the domain for f(x)+7
f(x)-7
3f(x)
-f(x)
f(x+1)
f(x-1)
f(-x)
-f(x+1)+1

#2 2013-01-23 08:27:43

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,337

Re: domain and range

Did you mean the range ?

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

Offline

#3 2013-01-23 08:33:29

skylor b
Guest

Re: domain and range

domain and range sorry and a graph.

#4 2013-01-23 08:37:12

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,337

Re: domain and range

eg.  f(x) + 7

put x = 0 and x = 2  to work out the new range.

Not sure what you mean by graph.

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

Offline

#5 2013-01-23 08:41:09

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,507

Re: domain and range

Hi Bob

How do you know which values f(x) takes at x=0 and x=0 when it os nowhere explicitly given?


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

Offline

#6 2013-01-23 08:44:23

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,337

Re: domain and range

Good point.  I'm assuming f is linear.

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

Offline

#7 2013-01-23 08:45:23

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,507

Re: domain and range

It could be a polynomial of degree 100 for all you know...


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

Offline

Board footer

Powered by FluxBB