## Graphing Quadratic Equations with the TI-84 Plus C

By | December 14, 2016

Graphing Quadratic Equations In this tutorial students will learn about graphing quadratic equations on a TI-84 Plus C graphing calculator.  A quadratic equation is a second degree polynomial.  The largest exponent in a quadratic equation is 2. When graphed a quadratic equation forms a parabola.  A parabola has several distinct parts named the focus, vertex, axis of symmetry and directrix.

## Algebra II – Find the Discriminant of a quadratic equation

By | December 1, 2016

Discriminant of Quadratic Equations In this tutorial students learn how to evaluate the discriminant a quadratic function.  Evaluate the discriminant to learn information about the number and type of solution(s) to a quadratic equation before completely solving the equation. Discriminate expression:   Once the quadratic equation is in standard form you can than easily identify a, b… Read More »

## Algebra – Find the vertex of the quadratic equation

By | November 30, 2016

Find the vertex of the quadratic equation In this tutorial students learn how to find the vertex of a quadratic equation (parabola) using various methods.  Those methods include graphing with the TI 84 C, calculus, and algebra methods like completing the square. When using the calculator I could have also used the MINIMUM function. 2ND |… Read More »

## Trigonometry – Solve Quadratic Trigonometric Equation over the Interval [0,2pi)

By | October 4, 2016

Quadratic Trigonometric Equation In this tutorial students learn how to solve a quadratic trigonometric equation over a specified interval, [0,2π). The students then verify the solutions using the GRAPH, TABLE, WINDOW and ZOOM features of the TI-84C. Virginia Standards of Learning(SOL) T.8 1) Simplify and/or factor the equation if necessary. 2) Get the trigonometric function on… Read More »

## Solving trigonometric quadratic equations using the Substitution Method

By | September 28, 2016

Substitution Factoring Method In this tutorial students will learn how to use the substitution factoring method.  The students will solve a quadratic equation that has trigonometric functions. Virginia Standards of Learning(SOL) T.8 1) Simplify and/or factor the equation if necessary. 2) Get the trigonometric function on one side and the numeric value on the other side. 3)… Read More »