FunctionHard

Question

If f(x) is negative & 2f(sinx) + √2 f(-cosx) = - tanx,then value of f (1/2) is

Options

A.
B.
C.
D.None of these

Solution

Put x =
   .........(1)
  .........(2)
by (2) - √2(1)     (2) - √2 (1)

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