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MTH 102 MTH 102 Past Questions Objective Question

Question

Integrate ∫x/(x-1) dx
Options
A ln(x + 1)
B x + ln(x-1)
Correct Answer
C e<sup>(x+1)/x</sup>
D ln(x-1)/x
Correct Answer

Option B is the correct answer.

Detailed Explanation

To integrate x/(x-1), we can perform algebraic manipulation on the integrand.Add and subtract 1 in the numerator:x/(x-1) = (x-1) + 1/(x-1)Separate the terms:= (x-1)/(x-1) + 1/(x-1)= 1 + 1/(x-1)Now, integrate the simplified expression:∫(1 + 1/(x-1)) dx = ∫1 dx + ∫1/(x-1) dx= x + ln|x-1| + C. This matches option B.

Hint

Rewrite the integrand using algebraic manipulation to simplify it before integration. For example, add and subtract a term in the numerator to create a form that can be easily split.

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