Use matrix multiplication to find the reflection of(a, b) about the (a) x-axis. (b) y-axis. (c) line y = x.

4.1 Homework/Quiz due Tuesday February 2, 2016 Math 121 Section 4.1 Techniques for Finding Derivatives Jan. 28, 2016 We know how to find the derivative of a function using '( ) f (a+h)−f (a) f x =lim ¿h→0 h (provided the limit exists)....