Mathematics

Mathematics

Problem

The equation sin⁡4x−(k+2)sin⁡2x−(k+3)=0\sin^4 x - (k+2)\sin^2 x - (k+3) = 0 possesses a solution if 12020 (a) k>−3k > -3 (b) k<−2k < -2 (c) −3≤k≤−2-3 \le k \le -2 (d) k is any positive integer

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