Every question IB students actually ask.

Answered in under a minute.

Mathematics Applications & Interpretation (AI)

How Do You Use an Inverse Matrix to Solve a System of Linear Equations?

Learn how to write a linear system as AX = B, find an inverse matrix, and calculate X = A^{-1}B, with an IB Math AI HL example and exam tips.

AHL 1.15-Eigenvalues and eigenvectors

What Are Eigenvalues and Eigenvectors of a Matrix?

Understand eigenvalues and eigenvectors, calculate them for a 2 by 2 matrix, and avoid common errors in IB Mathematics AI HL exams with a worked example.

193 216 234

Every question IB students actually ask.

Mathematics Applications & Interpretation (AI)

How Do You Use an Inverse Matrix to Solve a System of Linear Equations?

What Are Eigenvalues and Eigenvectors of a Matrix?

MYP Subjects

Mathematics Applications & Interpretation (AI)

How Do You Use an Inverse Matrix to Solve a System of Linear Equations?

What Are Eigenvalues and Eigenvectors of a Matrix?

What's the Difference Between the Command Terms “Draw” and “Sketch”?

Why Is the Inverse Function a Reflection in the Line y = x?

How Do You Find the Inverse of a Function?

How Do You Write a Complex Number in Cartesian Form?

How Do You Add Two Sinusoidal Functions With the Same Frequency but Different Phase Shifts?

How Do You Multiply, Divide, and Raise Complex Numbers to a Power in Polar Form?

How Can Complex Numbers Represent Addition and Rotation Geometrically?

What Are the Identity Matrix and Zero Matrix?

How Do You Know if a Calculated Result Is Reasonable (Estimation)?

How Do You Simplify an Expression With Fractional Exponents?

What Is the Imaginary Unit i?

How Do You Find the Sum of an Infinite Convergent Geometric Series?

How Do You Convert a Complex Number Between Cartesian, Polar, and Exponential (Euler) Form?

How Do You Use the Argand Diagram to Represent Complex Numbers?

Why Is Matrix Multiplication Non-Commutative?

What Is a Matrix and What Do the Terms Element, Row, Column, and Order Mean?

What Are the Laws of Exponents With Integer Exponents?

How Do You Evaluate a Logarithm Using Technology?

How Do You Calculate Percentage Error?

What's the Difference Between Decimal Places and Significant Figures?

How Do You Calculate Loan Amortization Using a Financial Calculator or Spreadsheet?

How Do You Find the Upper and Lower Bounds of a Rounded Number?