fx991EX Functions, Tables, Regressions and Visualization with QR

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fx-991EX Class Wiz Scientific Calculator

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fx991EX Functions, Tables, Regressions and Visualization with QR Code Mini-Math Lesson)

Found this incredible function on my Fx991EX if you press shift and Option button on left corner it creates a QR code that can be scanned with a phone to see graphing

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fx991EX: Functions, Tables, Regressions and Visualization with QR Code (Mini-math Lesson)