Question
Question: If \(\frac{3x + 4}{x^{2} - 3x + 2} = \frac{A}{x - 2} - \frac{B}{x - 1}\),then \((A,B) =\)...
If x2−3x+23x+4=x−2A−x−1B,then (A,B)=
A
(7, 10)
B
(10, 7)
C
(10, – 7)
D
(– 10, 7)
Answer
(10, 7)
Explanation
Solution
3x+4=A(x−1)−B(x−2)
⇒ 21≤log0.1,x≤2 4=−A+2B
⇒ A=10,B=7
∴ (A,B)=(10,7).