The fx-50FH II cannot solve inequalities directly. Use the EQN mode to find roots, then test intervals manually.
One entry, dated 2005, read: "Used to solve the Navier-Stokes equations. Mind blown." Another, from 2010, stated: "Helped me pass my stats exam. Life saver!" These notes formed a sort of mathematical folklore, a shared experience that connected Sophie to the generations of users who had come before her. casio fx-50fh ii user manual
The orange SHIFT key and the blue ALPHA key are vital. The manual explains this, but here is the practical application: The fx-50FH II cannot solve inequalities directly
In the weeks leading up to your HKDSE Mathematics Paper 1 (compulsory part) and Paper 2 (multiple-choice), spend one evening reading the manual cover to cover. Pay special attention to: Mind blown
Spend 20 minutes walking through the programming and equation solver sections. You’ll walk into your next math or physics exam with a serious advantage.