01
Graphing Your First Function
Plot y = x² and customize the viewing window
02
Solving Equations Step by Step
Use the Solver to find roots and intersections
03
Using 2nd Functions & ALPHA Keys
Unlock the hidden functions printed on every key
04
Calculating Sin, Cos & Tan
Trig functions, inverse trig, degree vs. radian mode
05
Working with Logarithms
log base 10, natural log ln, and change-of-base formula
06
Storing & Recalling Variables
STO→, RCL, and using A–Z variables in expressions
07
Fractions & Mixed Numbers
Enter fractions, convert decimals, simplify results
08
Scientific Notation & EE Key
Enter and interpret numbers in scientific notation
09
Statistics: Mean, Median & StdDev
Enter data lists and run 1-Var Stats
10
Finding Zeros & Intersections
Use CALC menu to find roots and crossing points on a graph
11
Using ANS & Entry Keys
Chain calculations, reuse last answer, and recall history
12
Matrices: Add, Multiply & Inverse
Enter matrices, perform row operations, find determinants
13
Graphing Piecewise Functions
Use conditional logic to graph functions with branches
14
SAT & ACT Exam Tips
Time-saving shortcuts every test-taker should know
15
Common Errors & How to Fix Them
ERR:SYNTAX, ERR:WINDOW RANGE, ERR:DIM MISMATCH and more
16
Graphing Inequalities
Shade regions above or below a curve using inequality syntax
17
Linear Regression & Best Fit Lines
Enter paired data, run LinReg, and graph the equation of best fit
18
Using the TABLE Feature
View function values at a glance without graphing — perfect for patterns
19
Calculating Derivatives & Integrals
Use nDeriv and fnInt to approximate calculus results numerically
20
Complex Numbers & Imaginary Mode
Enable a+bi mode and perform arithmetic with complex numbers
21
Linear Regression & Scatter Plots
Enter paired data, run LinReg, and graph the line of best fit
22
The TVM Solver — Loans & Compound Interest
Calculate mortgage payments, savings growth, and loan terms
23
Probability: Combinations & Permutations
Use nCr, nPr, factorials, and random number generators
24
Sequences & Series
List terms, compute partial sums, and graph recursive sequences
25
Numerical Derivatives & Definite Integrals
Use nDeriv and fnInt to solve AP Calculus problems numerically
26
Parametric Graphing Mode
Graph x(t) and y(t) curves — circles, ellipses, and projectile paths
27
Polar Graphing Mode
Graph r(θ) equations — roses, limaçons, cardioids, and spirals
28
Normal Distribution — normalcdf & invNorm
Calculate probabilities and find percentile values for bell curves
29
Binomial Distribution — binompdf & binomcdf
Find exact and cumulative probabilities for binomial experiments
30
Solving Systems of Equations with Matrices
Use rref to solve 2×2 and 3×3 linear systems instantly
31
Absolute Value Functions & Equations
Graph V-shapes and solve |x − a| = b using abs( and intersection
32
Exponential Functions & Growth/Decay
Graph y = abˣ, use e^(, and run exponential regression on data
33
Using the CATALOG Menu
Access every built-in function — gcd, lcm, remainder, round, and more
34
Resetting Your TI-84 (RAM Clear & Defaults)
Clear memory before a test or restore factory settings safely
35
Adjusting the Viewing Window
Master WINDOW settings and ZOOM shortcuts for perfect graphs every time
36
Graphing Multiple Functions at Once
Compare curves, find intersections, and toggle functions on/off
37
Box Plots & Histograms with STAT PLOT
Draw statistical graphs from list data using the STAT PLOT menu
38
Converting Degrees, Minutes & Seconds
Convert DMS ↔ decimal degrees and degrees ↔ radians using the ANGLE menu
39
Quadratic Functions — Vertex, Roots & Graph
Find the vertex, roots, and best-fit quadratic for any parabola
40
Complex Numbers & the a+bi Mode
Arithmetic, modulus, argument, and polar form for complex numbers
01
How to Add & Subtract Matrices
Add or subtract two matrices of the same size element by element
02
How to Multiply Two Matrices
Understand dimension rules and walk through A × B step by step
03
Scalar Multiplication
Multiply every element of a matrix by a single number
04
How to Transpose a Matrix
Swap rows and columns — what it means and when to use it
05
Finding the Determinant
Calculate det(A) for 2×2 and 3×3 matrices with full steps
06
Finding the Inverse (A⁻¹)
When an inverse exists and how to compute it using row reduction
07
Row Reduction & RREF
Reduce any matrix to Reduced Row Echelon Form with every step shown
08
Solving Systems with Matrices
Use RREF on an augmented matrix to solve a system of equations
09
Matrix Dimension Rules
Which operations require matching sizes — and why
10
Singular Matrices & No Inverse
What a zero determinant means and how to spot a singular matrix
01
Solving Linear Equations
Isolate x step by step — subtract, divide, and verify
02
Factoring Quadratics
Find two numbers that multiply and add to the right values
03
The Quadratic Formula
Use the discriminant and ±√ formula to find both roots
04
Understanding the Discriminant
Δ = b²−4ac tells you how many real solutions exist before solving
05
Complex & Imaginary Roots
What happens when Δ < 0 and solutions involve i
06
Solving a 2×2 System
Elimination method — scale, subtract, and back-substitute
07
Parallel Lines & No Solution
Recognize when a system has no solution or infinitely many
08
Equations with Decimals & Fractions
Enter any real-number coefficient — the solver handles the rest
09
Checking Your Answer
Substitute your solution back — every solver step shows a verify check
10
Repeated Roots Explained
When Δ = 0 there is one solution — here is what that means geometrically