Casio CFX-9800G-w Owners Manual - Page 60
csamECInEel, wEEEICIM, MEIMEJ
UPC - 079767128685
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IllTo Perform an Integration Calculation Example To perform the integration calculation for the function f i 5(2x2 + 3x+ 4)dx Input the function fi x). csamECInEel wEEEICIM IS(042 +3X+4, _ Input the start point and end lifiC2XE+3X+4 , 1.* 5,-1 point. MEIMEJ Input the number of divisions EDEI ,I; ( 2X 2 +3X+4 x 1 a 5: 1 li.;r (2X 2+ I.33 : +4667 61 6567; 67 The result takes a few seconds to appear on the display. COO K You can confirm the parameters of this calculation by recalling the values stored in the value memories. IH 134.6666667 •Xbculeiasrrnnetdhanemtpoacenor(elnAyntetethhnxertpossrueeogssfhsmtihZoaen,yrct,hbooaerrrtoe0cms)a,pntiothtbneaeddt i.vunaIsgfreiyyadoabiulnlueeothnm-meaimtefunmen, iocsthtriyreoenigcnfaaixtrlh)cd.uee_l-dIacf taayolosrcuuaaluuactstooieonmnasa.nt-atyicnoatt,lhluyesrsinevglaetrchiates- the most appropriate value. •In general, calculation precision is ±1 at the least significant digit of the result. -84- MApplication of Integration Calculation *Integrals can be used in addition, subtraction, multiplication and division. Example l abf(x)dx+ f edg(x)dx •Integration results can be used in addition, subtraction, multiplication and division, in functions. Example 2 xrf(x)dx, log (fabf(x)dx) •Functions can be used in any,of the terms (fix), a, b, n) of an integral. Example (sinx +cosx)dr =f (sinx+cosx, sin 0.5; cos 0.5, 5) *Note that you cannot use differential, integration, or E calculations inside of an integration calculakion term. Important •Pressing LE during calculation of an integral (while the cursor is not shoWn on the dis- play) interrupts the calculation. *Always perform trigonometric integrations using radians (Rad Mode) as the unit of angular measurement (see page 28): -- •Integration calculations use valUe memories k through N kir storage, deleting any contents that may be already stored. This also means that you cannot use these value memories during integration Calculations., . In addition to the above, the value that represents division beginning point a is stored in value memory X following completion of the integration calculation. •This unit utilizes Simpson's rule for integration calculation. As the number of significant digits is increased, more calculation time is required. In some cases, calculation results may be erroneous even after considerable time is spent performing a calculation. In par- ticular, when significant digits are less than 1, an ERROR (Ma ERROR) sometimes occurs. •Integration involving certain types of functions or ranges can result in relatively large errors being generated in the values produced. -85-