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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전산응용수학회 The Korean journal of computational & applied mathematics, 한국전산응용수학술지 Series A The Korean journal of computational & applied mathematics, 한국전산응용수학술지 Series A 제6권 제2호
- 발행연도
- 1999.1
- 수록면
- 523 - 538 (16page)
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초록· 키워드
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A new preconditioning method is investigated to reduce the roundoff error in computing derivatives using Chebyshev col-location methods(CCM). Using this preconditioning causes ration of roundoff error of preconditioning method and CCm becomes small when N gets large. Also for accuracy enhancement of differentiation we use a domain decomposition approach. Error analysis shows that for this domain decomposition method error reduces proportional to the length of subintervals. Numerical results show that using domain decomposition and preconditioning simultaneously gives super accu-rate approximate values for first derivative of the function and good approximate values for moderately high derivatives.
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