Associate CET Math · Competency 9.x

📐 Electronics Algebra Trainer

Learn the algebra the Associate CET exam actually tests — rearranging and solving electronics formulas. Start with Foundations for the core idea, then open the Rearrange Lab to manipulate live equations with a real algebra engine that checks every move. Drill with Step-by-Step Practice and the Rearrange Trainer, and keep the Reference and Solver close by.

Rearrange Lab

This is the real thing: a live equation you manipulate yourself. Pick a formula and the variable to solve for, then apply operations to both sides — a genuine algebra engine carries out each move and checks your progress. Or switch to Type-the-answer mode and enter the rearranged formula directly; the engine accepts any algebraically-correct form, not just one you were expected to write.

Formula

Solve for

Apply an operation to both sides:

or:

Why this is different: there's a real symbolic engine underneath. In guided mode it actually performs the algebra you choose and tells you when you've isolated the variable. In type mode it checks your answer by testing it against the original relation at many values — so any correct rearrangement passes, however you write it.

Step-by-Step Practice

Work a real Associate CET–style problem one step at a time. At each step you decide what to do — and you control how much help you get: try it yourself, take a hint, reveal the next step, or see the full solution. Pick a topic and difficulty to begin.

Topic

Difficulty

Rearrange Trainer

The Associate CET exam gives you a formula sheet — so the real skill it tests is rearranging a formula to solve for the variable they ask about. This drills exactly that: you're shown a formula and a target variable, and you pick the correctly rearranged version. Pure algebra muscle, no arithmetic.

Score: 0 / 0

Tip: ask yourself "what's attached to the variable I want, and how do I undo it?" Multiplication → divide, division → multiply, a square → square root — always to both sides.

Formula Solver

Choose a formula. Enter the values you know and leave the unknown blank — the solver finds it and shows how the formula was rearranged to isolate that variable. Best used to check your own work after you've tried it.

Formula

Formula Reference

Every core Associate CET formula, shown in all of its rearranged forms at once. Seeing the whole family together — V=IR alongside I=V/R and R=V/I — is how the rearranging finally sticks. Grouped by topic.

General Equation Solver

Solve algebra you meet in circuit analysis. Pick the type, enter the coefficients, and get the solution with worked steps.

Equation type

Where you'll use this: Simultaneous equations come up in mesh and nodal analysis — when Kirchhoff's laws give you two equations in two unknown currents or voltages, this solves them the same way you would by substitution or elimination.