Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
#1 2019-08-01 14:22:52
- Hannibal lecter
- Member
- Registered: 2016-02-11
- Posts: 392
how to determine any range of a function without draw graph?
how to determine any range of a function without draw graph? on pen and paper mathematically
help me please.. I'm every beginner
for example like y= square root of ( x+4 )
Wisdom is a tree which grows in the heart and fruits on the tongue
Offline
#2 2019-08-01 19:55:45
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,136
Re: how to determine any range of a function without draw graph?
Domain:The function under the root sign must not be negative so:
Range: If the amount being rooted is 0 or positive then any value from 0 upwards is possible so
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
Offline