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If x+32x−1<1\dfrac{x+3}{2x-1} < 1, then the solution set contains :

A. (−∞,1/2)(-\infty,1/2)

B. (−∞,4)(-\infty,4)

C. (−4,4)(-4,4)

D. (4,∞)(4,\infty)

Choose the correct answer from the options given below:

Solution

✅ Correct Option: 1

x+32x−1−1=4−x2x−1<0\dfrac{x+3}{2x-1}-1=\dfrac{4-x}{2x-1}<0, i.e. x−42x−1>0\dfrac{x-4}{2x-1}>0.

Sign analysis gives x<12x<\dfrac12 or x>4x>4.

The solution set therefore contains (−∞,12)(-\infty,\frac12) and (4,∞)(4,\infty).

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