1.

The number of distinct real roots of ∣∣∣∣sin xcos xcos xcos xsin xcos xcos xcos xsin x∣∣∣∣=0 in the interval −π4≤x≤π4 is (a) 0 (b) 2 (c) 1 (d) 3

Answer»

The number of distinct real roots of
sin xcos xcos xcos xsin xcos xcos xcos xsin x
=0
in the interval π4xπ4 is

(a) 0
(b) 2
(c) 1
(d) 3



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