E-CodeEngineering on a TI-84: how-to guides
7 guides for engineering on the TI-84 Plus CE, TI-84 Plus and TI-83 Plus. Each one shows the keys to press, step by step.
The guides
- Use engineering notation (TI-84 Plus CE): Press MODE (the cursor starts on NORMAL), ▶ twice onto ENG and ENTER, then 2nd QUIT.
- Use engineering notation (TI-84 Plus): Press MODE, ▶ twice onto ENG on the top row (NORMAL SCI ENG) and ENTER, then 2nd QUIT.
- Convert a complex number to polar form: Type the complex number (2nd .
- Solve simultaneous equations: Open APPS, PlySmlt2, press any key and 2, set EQUATIONS and UNKNOWNS (◀ onto 2, ENTER on each row) and press GRAPH (NEXT).
- Find the determinant and inverse of a matrix: Type the matrix into [A] (2nd MATRIX, ▶ ▶ EDIT, ENTER), then on the home screen press 2nd MATRIX, ▶ to MATH, 1 for det(, 2nd MATRIX 1 for [A], ) and ENTER.
- Use variables as integral limits (TI-84 Plus CE): Store the limits first (0 STO→ ALPHA A, 2 STO→ ALPHA B), then press MATH 9 for the ∫ template and fill it with A ▶ B ▶ X² ▶ X, then ▶ and ENTER: 2.666….
- Work out an integral with its limits in variables (TI-84 Plus): Store the limits first (0 STO→ ALPHA A, 2 STO→ ALPHA B), then press MATH 9 for fnInt( and type fnInt(X²,X,A,B) and ENTER: 2.666….