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Decompose 2x+1/(x(x-1)) into partial fractions, finding A and B in the expression A/x + B/(x-1).

Mathematics

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Question 1:
We are given the equation:

2x+1x(x−1)=Ax+Bx−1\frac{2x+1}{x(x-1)} = \frac{A}{x} + \frac{B}{x-1}
  1. Combine the terms on the right side of the equation.

    Ax+Bx−1=A(x−1)+Bxx(x−1)=Ax−A+Bxx(x−1)=(A+B)x−Ax(x−1)\frac{A}{x} + \frac{B}{x-1} = \frac{A(x-1) + Bx}{x(x-1)} = \frac{Ax - A + Bx}{x(x-1)} = \frac{(A+B)x - A}{x(x-1)}
  2. Equate the numerators of both sides.

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