Lecture 28. Functions Inverses and Injectivity. Problem Solving

We want you to SEE how a DENTAL INJECTION is DONE So you're curious about what a dental injection is like? Here's a brief overview: ✅First, the dentist will dry your mouth with cotton. ✅Then, we will apply a gel containing lidocaine, a numbing agent, to your gums. This will help to reduce any discomfort you may feel during the injection. ✅After 3-5 minutes, the dentist will begin the injection. The anesthetic will numb the area around the tooth that is being worked on 💪🦷 #dentalcare #holisticd

Surjective and Bijective Functions Explained | Onto Mapping Made Easy.

One-to-one (Injective) Functions

Check the injectivity and surjectivity of the following functions:(i) `f : N -N`given by