Solveeit Logo

Question

Question: If \(\frac{(e^{x} + 2)}{(e^{x} - 1)(2e^{x} - 3)} = - \frac{3}{e^{x} - 1} + \frac{B}{2e^{x} - 3}\), t...

If (ex+2)(ex1)(2ex3)=3ex1+B2ex3\frac{(e^{x} + 2)}{(e^{x} - 1)(2e^{x} - 3)} = - \frac{3}{e^{x} - 1} + \frac{B}{2e^{x} - 3}, then B=B =

A

1

B

3

C

5

D

7

Answer

7

Explanation

Solution

ex+2=3(2ex3)+B(ex1)e^{x} + 2 = - 3(2e^{x} - 3) + B(e^{x} - 1)

\Rightarrow 1=6+B1 = - 6 + B, 2=9B2 = 9 - B \Rightarrow B=7B = 7.