Casio fx-50F User Manual

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Contents

E-58A Displaying a Built-in FormulaWhile inputting values for the variables of a formula, you can display the formula by pressing1G(LOOK).(Value Input Screen)1G(LOOK)• If the formula is too long to fit on the display use the e key to scroll to the right to viewthe missing part.• To clear the formula from the display, press 1p(EXIT) or A.k Built-in Formula ListNo. 01 Quadratic Equation SolutionSolves a quadratic equation using values you specify for a, b, and c.No. 02 Cosine TheoremFor a triangle for which the lengths of two sides (b and c) and the angle (Ƨ) formed by themare known, determines the length of remaining side.No. 03 Heron’s FormulaDetermines the area (S) of a triangle when the lengths of its three sides (a, b, c) are known.No. 04 Normal Probability Function P(x)Uses Hastings’ estimate formula to determine the probability of a standard normaldistribution P(x) illustrated below when the standardized variate (x) is known.Important!Since this is an estimate formula, proper precision may not be obtainable.0a0a0 3 : S='(s ( s– a ) ( s –0 3 : S='(s ( s– a ) ( s –ax2 + bx + c = 0 (a ≠ 0, b2 − 4ac 0)ax2 + bx + c = 0 (a ≠ 0, b2 − 4ac 0)a = b2 + c2 − 2bc cosθ (b, c > 0, 0˚< 180˚)θa = b2 + c2 − 2bc cosθ (b, c > 0, 0˚< 180˚)θS = s(s − a)(s − b)(s − c) , s= (a + b + c)(a + b > c > 0, b + c > a > 0, c + a > b > 0)2S = s(s − a)(s − b)(s − c) , s= (a + b + c)(a + b > c > 0, b + c > a > 0, c + a > b > 0)2P(x) = e dt(0 x < 1 × 10 50 )2π1 − ∞∫ x 22t−P xxP(x) = e dt(0 x < 1 × 10 50 )2π1 − ∞∫ x 22t−P xx