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AP EAMCET2004MathematicsTrigonometric Equations

For x I R, 3 (4 x-5)+4 lies in the interval

Options

  1. A[1,7]
  2. B[4,7]
  3. C[0,7]
  4. D[2,7]

Correct answer

A. [1,7]

Step-by-step solution

Since, the value of lies between -1 and +1 aligned & i.e. -1 1 & -1 (4 x-5) 1 & -3 3 (4 x-5) 3 & 4-3 3 (4 x-5)+4 3+4 & 1 3 (4 x-5)+4 7 & aligned

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