Find the value of k if \( \frac{5+2r}{(r+1)(r-2)} \) expressed in partial fraction is \( \frac{k}{r-2}+\frac{L}{r+1} \) where K and L are constants

Assessment: JAMB UTME - Mathematics - 1997 Subject: General Mathematics

Question 1 Report

Find the value of k if \( \frac{5+2r}{(r+1)(r-2)} \) expressed in partial fraction is \( \frac{k}{r-2}+\frac{L}{r+1} \) where K and L are constants

Answer Details
5 + 2r = k(r + 1) + L(r - 2)
but r - 2 = 0 and r = 2
9 = 3k
k = 3

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