Computational Word Problems
Many standardized tests like the HSPT, ISEE, ACT, and SAT will ask you to perform basic arithmetic computations. You will not see any variables in [...]
Central Angle, Arc Length, and Sector Area of Circles
Many standardized tests like the ACT, SAT, GRE, and GMAT ask questions related to the central angle, arc length, and sector area of circles. Rather [...]
Verifying Trigonometric Identities
Lessons in Algebra 2, Trigonometry, and Pre-Calculus courses often involve verifying trigonometric identities. We are so accustomed to solving equations that "verifying" or "providing" [...]
Multiplying Matrices
Matrices can seem like a fun puzzle to some . . . or a confounding nightmare to others. This guide will help with one of [...]
Law of Sines and Law of Cosines
Law of Sines and Law of Cosines are special trig rules that can be used on non-right (acute or obtuse) triangles. This guide summarizes the [...]
Log Rules
Logs "undo" Exponents, and are thus a vital concept in Math and Science. This guide reviews the 7 Log Rules and how to Expand, Condense, [...]
Simplifying Exponential Expressions
Exponential Expressions are a component in most math and science curriculum. Despite the various ways exponents are used, there are only 8 Exponent Rules you [...]
Inverse Functions
A function that has been reflected over the line y=x is the inverse. Inverse functions can be determined if given points, a graph, or an [...]
Quadratic Functions: Standard vs Vertex Forms
Quadratic Functions can be expressed in Standard Form or Vertex Form. There are pros and cons of each form, but they both reveal valuable information [...]
Transformations of Functions
Graphs are intricate visual representations of complex data. As if they weren't complicated enough, they can stretch, shrink, shift, and reflect too! Use this guide [...]