Casio FX-9860GII-L-IH User Guide - Page 100
Quadratic Differential Applications, <Math>
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2-5-6 Numerical Calculations A4(MATH)5(d 2/dx2)vMde +evx+v-gedw u Quadratic Differential Applications • Arithmetic operations can be performed using two quadratic differentials. -dd-x2-2 f (a) = f ''(a), -dd-x2-2 g (a) = g''(a) Therefore: f ''(a) + g''(a), f ''(a) × g''(a), etc. • The result of a quadratic differential calculation can be used in a subsequent arithmetic or function calculation. 2 × f ''(a), log ( f ''(a) ), etc. • Functions can be used within the terms ( f(x), a, tol ) of a quadratic differential expression. -dd-x2-2 (sin x + cos x, sin 0.5, 1E - 8), etc. # In the Math input mode, the tolerance value is fixed at 1E-10 and cannot be changed. # The rules that apply for linear differential also apply when using a quadratic differential calculation for the graph formula (see page 25-2). # Inaccurate results and errors can be caused by the following: - discontinuous points in x values - extreme changes in x values - inclusion of the local maximum point and local minimum point in x values - inclusion of the inflection point in x values - inclusion of undifferentiable points in x values - differential calculation results approaching zero # You can interrupt an ongoing quadratic differential calculation by pressing the A key. # Always use radians (Rad mode) as the angle unit when performing trigonometric quadratic differentials. # You cannot use a differential, quadratic differential, integration, Σ, maximum/minimum value, Solve, RndFix or log ab calculation expression inside of a quadratic differential calculation term. # With quadratic differential calculation, calculation precision is up to five digits for the mantissa. 2007501401