# What are the extrema of #f(x)=f(x)= x^2 -4x +3#?

##### 1 Answer

Jan 21, 2016

#### Answer:

The extrema is at x = 2; obtained by solving

graph{x^2-4x+3 [-5, 5, -5, 5]} solve for x.

#### Explanation:

You would typically find the first derivative and second derivative to find the extrema, but in this case it is trivial simply find the first derivative. WHY? you should be able to answer this

Given

Now set