Math programs for the TI-84 Evo, sent to your calculator from this page. Each one does something the calculator can't on its own.
Most run from the calculator's built-in TI-Basic menu; CalcPlex CAS runs in the Python app.
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Fixing send problems
- Nothing listed in the connect popup: the calculator has to be plugged in and switched on to appear. Wake it up, check the USB cable (charge-only cables won't work), or move to a different port. Close any other tab that's using the calculator. It's also worth updating your browser.
- Calculator busy? A program or menu is open on it.
Back out to the home screen (press
clearon the calculator repeatedly), then retry. - Program disappeared from the calculator? A reset or RAM clear removes programs. Just come back to this page and send it again.
- CalcPlex CAS says MemoryError when it starts? Delete other programs and games until it runs. Every installed program counts, TI-Basic ones included, and archiving is not enough. CAS runs happily when everything else adds up to under about 20KB; you can resend anything you deleted later.
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Safari and phones can't connect to the calculator. Open this page in
Chrome, Edge, or Firefox on a computer and the one-click button does the
rest. Once a program is on the calculator, press prgm, choose
TI-Basic (or Python App for CalcPlex CAS), and pick it
from the list.
Still stuck? Email contact@calcplex.com and we'll take a look.
Quadratic Formula
Type a, b, and c and it prints both solutions to ax²+bx+c=0.
CalcPlex CAS
Factors polynomials, solves equations, does derivatives. Exact answers.
Unit Circle
The whole unit circle: every angle in degrees, radians, and exact (x,y).
Radical Simplifier
Turns any square root into its exact simplified form: type 50 and get 5√2, not 7.071.
Factoring Polynomials
Type the coefficients and it prints the factored form, like (x-2)(x-3).
Distance Formula
Type the coordinates of two points and it finds the distance between them.
Pythagorean Theorem
Type the two sides of a right triangle you know and it finds the third.
Slope Formula
Type two points and get the slope and the y=mx+b equation.
Midpoint Formula
Type the coordinates of two points and it finds the midpoint between them.
Prime Factorization
Break any whole number into its prime factors, like 360 into 2³·3²·5.
Unit Converter
Length, mass, volume, temperature, time, speed, area, pressure and energy.