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KCET2012MathematicsTrigonometric Equations

If 2 x=4 x , then x is equal to

Options

  1. An 2 4 , n Z
  2. Bno value
  3. Cn +(-1)^ n 4 , n Z
  4. D2 n 2 , n Z

Correct answer

D. 2 n 2 , n Z

Step-by-step solution

Given, 2 x=4 x aligned & 2 x x=4 x & 2 x( x-2)=0 aligned x=2 , which is not possible because the value of x lies between -1 and 1 . x =0 x=2 n 2

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