E-CodeHow to use a TI-84: step-by-step guides
67 guides for the TI-84 Plus CE, TI-84 Plus and TI-83 Plus, in 8 subjects. Each one shows the keys to press, one step at a time, and what the screen shows at the end.
Hidden tricks
- Reuse an old answer
- Reuse an old line (TI-83 Plus)
- Keep going from the last answer
- Store a number in a letter
- Find any command in the catalog (TI-84 Plus)
- Find any command in the catalog (TI-84 Plus CE)
- Turn a decimal into a fraction (TI-84 Plus CE)
- Turn a decimal into a fraction (TI-84 Plus)
- Show a set number of decimal places (TI-84 Plus)
- Show a set number of decimal places (TI-84 Plus CE)
All TI-84 hidden tricks guides
Algebra
- Solve any equation (TI-84 Plus CE)
- Solve any equation (TI-84 Plus)
- Find the zeros of a function
- Find where two graphs cross
- Find the maximum or minimum of a graph
- Make a table of values
- Solve a system of equations with a matrix
- Find all the roots of a polynomial
Precalc & Trig
- Switch between degrees and radians (TI-84 Plus CE)
- Switch between degrees and radians (TI-84 Plus)
- Graph trig functions in the right window
- Convert degrees to degrees minutes seconds
- Use complex numbers
- Graph and shade inequalities (TI-84 Plus CE)
All TI-84 precalc & trig guides
Calculus
- Find the area under a curve
- Work out a definite integral (TI-84 Plus CE)
- Work out a definite integral on the home screen (TI-84 Plus)
- Find the slope at a point on a graph
- Draw a tangent line on a graph
- Find the derivative at a point (TI-84 Plus CE)
- Find the derivative at a point (TI-84 Plus)
- Estimate a limit with a table
- Add up a Riemann sum
- Work out a Riemann sum (TI-83 Plus)
Statistics
- Find mean and standard deviation
- Find mean and standard deviation (TI-83 Plus)
- Show r and r² on a regression (TI-84 Plus CE)
- Show r and r² on a regression (TI-84 Plus)
- Show r and r² on a regression (TI-83 Plus)
- Graph a line of best fit
- Graph a line of best fit (TI-83 Plus)
- Find a normal distribution probability
- Find a normal distribution probability (TI-83 Plus)
- Find a binomial probability
- Find a binomial probability (TI-83 Plus)
- Find a confidence interval for a mean
- Do a hypothesis test for a mean
Finance
- Work out a monthly loan payment
- Work out how long to reach a savings goal
- Work out the total interest on a loan
- Compare interest rates
- Find the balance left on a loan
- Work out net present value and internal rate of return
Science
- Type scientific notation
- Solve a physics formula for any letter (TI-84 Plus CE)
- Solve a physics formula for any letter (TI-84 Plus)
- Store a constant in a letter
- Show answers in scientific notation
- Fit a curve to data
- Fit a curve to data (TI-83 Plus)
Engineering
- Use engineering notation (TI-84 Plus CE)
- Use engineering notation (TI-84 Plus)
- Convert a complex number to polar form
- Solve simultaneous equations
- Find the determinant and inverse of a matrix
- Use variables as integral limits (TI-84 Plus CE)
- Work out an integral with its limits in variables (TI-84 Plus)