Questions about TI 30X Plus MathPrint

Battery or accumulator is already inside and charges via solar power

yes, this calculator would be ideal from secondary 1 to high school, but i recommend you to buy the pro model (ti 30x pro) because it is only 3 francs more expensive and you can have equations solved in addition to all the other functions.

Unfortunately, it does not :/

No, the 30 series would have to be approved at the university.