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To calculate radicals use the square root key. For higher index roots use [SHIFT][X^y]. You need to enter the index before pressing the key. Or use the general power key but with exponent (1/n) where n is the index of the root.
Hello, If by calculus problem you mean derivatives of functions, integrals, extrema and such things, I am sorry to inform you that neither the Casio FX-300MS, nor the FX-991MS can handle them. The newer Casio calculator FX-991ES is capable of performing numerical differentiations and integrations. There also graphing calculators by Casio FX-9750G, FX-9860G as well as by Texas Instruments (TI 83 PLUS/TI84PLUS) that are reasonably performant in that area.
Hello, This calculator transforms every radical into a decimal number. It does not perform exact calculations with radicals. For that you would need a Casio FX-115ES or FX-991ES (Natural Display). Hope it helps.
Hello, Sorry the calculator handles fractions but not radicals. You may be interested in the newer Casios FX-115ES, or FX-991ES, (Natural display). It handles a lof more that radical and fractions. Hope it helps.