# What are the critical points of #f(x) = sqrt((x^2 - 4x +5))#?

##### 1 Answer

Apr 16, 2018

**The critical point** of

#### Explanation:

**Differentiate**

now critical points are points at which **vertical** at that point **i.e.**

**not a real number**

So there is **one critical point** at

**The critical point** of