fx-9750giii vs fx-CG50

[Eddie W. Shore]

(03-08-2021 03:05 AM)lrdheat Wrote:  Both calculators behave in a similar fashion. The 9750giii seems about 60% as fast as the CG50, a whole lot faster than the 991EX. The 9750giii is the first graphic calculator that fits in my shirt pocket. The CG50 has much higher resolution on it’s graph function, and offers a pleasing labeled graph paper-like function graph. The SolveN function is not as forgiving on the 9750giii as the CG50 when it comes to selecting a domain to search for a solution set. On the CG50 when looking for solutions for d/dx (e^(10*ABS(x-2)-x^2)=0 in the Run-Mat mode, it finds both -5 and 5 for a domain of -10 to 10. The fx-9750giii finds no solution with that domain, but if I use a smaller domain around each possible solution as found in the table function, it comes up with a correct solution (I tried -5.3 to -4.7, for example). Of course, using G-solve on the graph is easiest. I like how a function placed in the graphing environment can be found in the VAR key, and referred to elsewhere in the calculator without having to rewrite the function. The graphic options do not offer to integrate from one root to another, or intersection point as on the CG50, but it is easy to go back to Run-Mat, enter “x”, and save the result to a memory to use back in the graphic mode for such calculations. Nice machine! Office Depot was selling it for $65, but honored the $38 price shown on the Walmart site!

I have a black fx-9750giii and tempted to get a white 9750giii, especially at that price. I wish Casio made a blue 9750giii, like they had with the 7400gii/7400giii, as blue is my favorite color. The 9750giii does almost everything the CG50 does, just with a monochrome screen instead of a color, backlit one. The 9750giii also lacks 3D graphing and geometry mode.