CAS entry
Exam 2 technology fluency
CAS skills interactive
Step-by-step practice for the small CAS actions that support longer Mathematical Methods questions: evaluating, solving, rearranging, factorising, graph checking, probability, and optimisation.
Skill
CAS skill
Required CAS skill map
Exam 2 actions to be fluent with
These actions are grounded in the technology demands of the paper, but the examples use fresh practice values.
Evaluate and round
Substitute into a model and round only at the final line.
Solve and restrict
Solve equations while applying the stated domain or interval.
Find parameters
Use a point, period, or constraint to solve for an unknown constant.
Rearrange and invert
Make a variable the subject and check the branch or domain.
Graph and intersect
Use roots, intersections, endpoints, and threshold values.
Optimise
Find a maximum or minimum on a restricted domain.
Probability arithmetic
Use repeated-trial, complement, at-least, and conditional probability calculations.
Piecewise checking
Check that adjacent domains do not overlap.
Try it
CAS command builder
Pick the CAS entry that matches the mathematical job.
Exam 2 habits
What to write after using CAS
Name the task
Say whether you are finding roots, an intersection, a subject, a maximum, or a probability.
Use restrictions
Include domains and intervals in the CAS entry or filter the output afterwards.
Interpret output
Choose the values that match the question and reject impossible branches.
Stay exact first
Use decimal output only when requested or when interpreting a measured quantity.