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Matrices, vectors, vector spaces, transformations. Covers all topics in a first year college linear algebra course. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.
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TRIZ Matrix / 40 principles / TRIZ contradictions table
For example , if you want a LONGER object, it's usually getting HEAVIER. Then, length is the improving feature but generates a worsening factor (weight). In the TRIZ Matrix select: Getting a longer and lighter object is a contradiction.