- #1
relyt
- 6
- 0
Define f: R->R by the rule:
[tex]f(w) =
\left\{
\begin{array}{lr}
-5, if x < 0\\
0, if x=0\\
+5, if x > 0
\end{array}
\right.[/tex]
if f onto and/or one-to-one?
These questions always get me. Can someone please help me walk through this problem? What do I look for first, etc?
those should be "if" (if x < 0, if x=0, if x > 0 etc)
Any help would be appreciated.[tex]\bar{}[/tex]
[tex]f(w) =
\left\{
\begin{array}{lr}
-5, if x < 0\\
0, if x=0\\
+5, if x > 0
\end{array}
\right.[/tex]
if f onto and/or one-to-one?
These questions always get me. Can someone please help me walk through this problem? What do I look for first, etc?
those should be "if" (if x < 0, if x=0, if x > 0 etc)
Any help would be appreciated.[tex]\bar{}[/tex]