# Precalculus Course Assistant

**Description**

Get help and answers with Precalculus, including limits. Easy interface guides you through course topics and has calculators and solvers for homework.

Evaluate any numeric expression or substitute a value for a variable

Solve a single equation or a system of equations

Plot functions on the x-y plane or draw a parametric or polar plot

Determine the sine, cosine, and tangent of a specific angle in a right triangle

Simplify, expand, or factor trigonometric functions

Find the partial fraction decomposition of an expression

Calculate the dot product, cross product, and magnitude of two vectors

Identify the mean, median, mode, and standard deviation of a set of data

Calculate permutations and combinations