Casio Ti 89. The casio fx 9750gii is a cheap graphing calculators with high quality available on the marketplace. Mathematica is definitely cumbersome to quickly solve a pde a small linear equation system or do some factorisation with trigonometric functions never mind maxima.
Otoh linear algebra was kind of a pain on the good old ti 89 once you got into div and curl. Texas instruments ti 89 titanium graphing calculator for engineers quick review. Some of the calculators that predict medical prognosis and all that are not what i m looking for.
Yeah no need for treatment recommendations and all that.
Screen is perfect with no scratches or dead pixels no sticky or non working buttons and battery contacts are perfect. This calculator is suggested for pretty much the same courses along with ti 84 plus. Mathematica is definitely cumbersome to quickly solve a pde a small linear equation system or do some factorisation with trigonometric functions never mind maxima. Otoh linear algebra was kind of a pain on the good old ti 89 once you got into div and curl.
