1. ## Function problem

hi ! can someone help me with this problem??

2. I see you've written that a proof by contradiction is the way to go. What have you done so far in that direction?

3. erm i know is using prof by contradiction, however i do not know how to apply that in this question!

4. Originally Posted by yrlim1
erm i know is using prof by contradiction, however i do not know how to apply that in this question!
Suppose that $\displaystyle \left( {\exists t \in B} \right)\left[ {g(t) \ne h(t)} \right]$.