- #1
lionely
- 576
- 2
Homework Statement
h:x → 4-x2, x E ℝ
show that it is not surjective(not onto ℝ)
The Attempt at a Solution
Since the line tests fail.
y= 4-x^2
x= √(4-y) = 2√-y
A root of a negative number is not possible so f(x) is not surjective onto R