Do Now: Given f(x) = 2x + 8 and g(x) = 3x2 – 1 find the following. 1.) (f + g)(x) 2.) g(x – 2)
Academy Algebra II/Trig 6.1: Composite Functions HW: p.407-408 (16, 18, 23, 29, 30, 34)
Compositions Given two functions f and g, the composite function, denoted by and read f composed with g, is defined by
Suppose f(x) = 2x2 – 3 and g(x) = 4x. Find the following. 1.) 2.)
Suppose f(x) = 2x2 – 3 and g(x) = 4x. Find the following. 3.) 4.)
Suppose f(x) = 2x2 – 3 and g(x) = 4x. Find the following. 5.) 6.)
Suppose . Find and determine the domain.
Suppose and . Find and determine the domain.
Domain of Domain of is the domain g(x) in the domain of f.
Academy Algebra II/Trig 6.2: One-to-one functions & Inverses
Verifying Inverses If and , then f and g are inverses of each other.
Verify f and g are inverses of each other.
Graphs of inverses. Inverses are a reflection over the line y = x. (Domain and range switch)
One-to-one To have an inverse, a function needs to be one-to-one. It must pass both the vertical line test and horizontal line test for the function to be one-to-one. Is one-to-one?
Find the inverse algebraically, if the inverse exists. 1.)
Find the inverse algebraically, if the inverse exists. 2.)
Find the inverse algebraically, if the inverse exists. 3.)