Mistake Master
Mistake Master · AP Precalculus · Unit 2 · Step-Through Animation
The Machine That Feeds a Machine
You'll learnto run a composition in the right order, and to spot the input the second machine refuses.
Composition chains two functions so that the output of one becomes the input of the other, and nearly every point this topic costs comes from a single confusion: reading the notation left to right and running the outer machine first. Watch one value travel the chain the right way, watch the wrong order land somewhere else entirely, and watch an input get stopped cold at the second machine’s door. Twelve short steps; press Next for each one.
the output of one machine is the input of the next
Before you start
What you're looking at
Two machines joined by a rail, with a single value traveling through them and its running total written underneath.
The question
Which machine runs first, and will the second one accept what the first hands it?