Numerical Calculations
| kIntegration Calculations |
To perform integration calculations, first display the function analysis menu and then input the values using the syntax below.
K4(CALC)4 (∫dx) f(x) ,a ,b ,tol )
(a: start point, b: end point, tol: tolerance)
∫( f(x), a, b, tol) ⇒ ∫ab f(x)dx
Area of ∫ab f(x)dx is calculated
As shown in the illustration above, integration calculations are performed by calculating integral values from a through b for the function y = f (x) where a <x <b, and f (x) >0. This in effect calculates the surface area of the shaded area in the illustration.
Example | To perform the integration calculation for the function shown |
| below, with a tolerance of “tol” = 1E - 4 |
| ∫ 5 (2x2 + 3x + 4) dx |
| 1 |
Input the function f (x).
AK4(CALC)4(∫dx)cvx+dv+e,
Input the start point and end point.
b,f,
Input the tolerance value.
w
#If f (x) < 0 where a <x <b, the surface area
calculation produces negative values (surface area ⋅ – 1).
20050401