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Compulsory 4-Mark Derivation in NEB Calculus Group BClass 12 • Mathematics • Unit 12
Rating: 5 / 5
Defensible Pedagogical Basis:
Specification Grid Section 5 (Calculus): Derivation of standard integrals via partial fractions is a core competency required in NEB Grade 12 board examinations.
Approach Summary: Decompose 1/(x² - a²) into (1/2a)[1/(x - a) - 1/(x + a)], integrate each term to obtain (1/2a) ln|(x - a)/(x + a)| + C. Complete square for x² - 6x + 5 = (x - 3)² - 2² and substitute.
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