Precalculus skills

156 skills 145 videos

Here is a list of skills students learn in Precalculus! These skills are organized into categories, and you can move your mouse over any skill name to preview the skill. To start practicing, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

A. Function concepts

  1. 1
    Domain and range
  2. 2
    Identify functions
  3. 3
    Add, subtract, multiply, and divide functions
  4. 4
    Composition of functions
  5. 5
    Average rate of change

B. Quadratic functions

  1. 1
    Find the maximum or minimum value of a quadratic function
  2. 2
    Characteristics of quadratic functions

D. Rational functions

  1. 1
    Rational functions: asymptotes and excluded values
  2. 2
    Check whether two rational functions are inverses

I. Logarithmic functions

  1. 1
    Domain and range of logarithmic functions

J. Radians and angles

  1. 1
    Convert between radians and degrees
  2. 2
    Radians and arc length
  3. 3
    Quadrants
  4. 4
    Coterminal and reference angles

O. Determinants and inverse matrices

  1. 1
    Determinant of a matrix
  2. 2
    Is a matrix invertible?
  3. 3
    Inverse of a 2 x 2 matrix
  4. 4
    Inverse of a 3 x 3 matrix
  5. 5
    Identify inverse matrices
  6. 6
    Solve matrix equations using inverses

R. Nonlinear inequalities

  1. 1
    Graph solutions to quadratic inequalities
  2. 2
    Solve quadratic inequalities
  3. 3
    Graph solutions to higher-degree inequalities
  4. 4
    Solve higher-degree inequalities

T. Complex numbers

  1. 1
    Multiply and divide complex numbers
  2. 2
    Add, subtract, multiply, and divide complex numbers