Mastering CAS Workflows
Define a quadratic function:
f(x) := x^2 - 4
Solve an inequality:
Solve[$1 < 0, x]
Now solve with this command:
Solve[#1 < 0, x]
Change line 1 to:
f(x) := x^2 - 9
Observe: What happens to the lines using $1 and #1?
When would a teacher want a static result? When might dynamic be more helpful?