Basic of Logarithms
easy

જો ${{3x + a} \over {{x^2} - 3x + 2}} = {A \over {(x - 2)}} - {{10} \over {x - 1}}$, તો

A

$a = 7$

B

$a = - 7$

C

$A = 13$

D

$(a)$ અને $(c)$ બંને

Solution

(d) ${{3x + a} \over {{x^2} – 3x + 2}} = {A \over {(x – 2)}} – {{10} \over {(x – 1)}}$

==> $(3x + a) = A(x – 1) – 10(x – 2)$

==> $3 = A – 10$, $a = – A + 20$

(On equating coefficients of $x$ and constant term)

==> $A = 13, a = 7.$

Standard 11
Mathematics

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