Why the calculator doesn't know that squaring a negative number should result in a positive value is something that left me dumbfounded

Buttons don't react sometimes so I'll type out a calculation and miss a number

More complex operations i.e. conversion imaginary number to polar coordinate work but took a while to get key sequences correct.

Also not the best for complex number, the Casio fx-115ES plus is perfect for complex numbers (about $17)

Casio does it right by multiplying the entire negative number against itself for whatever the exponent is (for example, -2^2 equals 4)

it's function is normal, but I don't satisfied with the buttons, they are not sensitive enough, so everytime you have to carefully push each button to input a number, not to strong to input twice and not to slight

Sometimes it feels like you pressed the number, but it does not register on the screen.

After cursing my new TI-30X IIS a number of times, I

I've had a few moments of confusion because my calculation didn't include the proper number of zeros

Bless u