2-5-6

Numerical Calculations

<Math>

A4(MATH)5(d2/dx2)vMde

+evx+v-gedw

uQuadratic Differential Applications

Arithmetic operations can be performed using two quadratic differentials.

d 2

f (a) = f ''(a),

d 2

g (a) = g''(a)

–––2

–––2

dx

 

dx

 

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.

d 2

(sin x + cos x, sin 0.5, 1E - 8), etc.

–––2

dx

 

#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 2-5-2).

#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 Akey.

#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.

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