Which calculator product launch in 1985 is widely credited with revolutionizing how calculus was taught in schools and universities by allowing visualization of complex functions for the first time?

Before digital tools transformed how we solve complex equations, one particular product launch in the mathematics world created a revolution in how calculus was taught and understood. This product made advanced mathematics more accessible to students worldwide and fundamentally changed the educational landscape. Test your knowledge about this pivotal moment in mathematical product history!

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Casio fx-7000G, the world's first graphing calculator
Texas Instruments TI-81, marketed as the 'Calculus Companion'
HP-28C, the first calculator with symbolic mathematics capabilities
Sharp EL-5200, known as the 'Function Master' graphing calculator