1.

The number of distinct real roots of ∣∣∣∣sinxcosxcosxcosxsinxcosxcosxcosxsinx∣∣∣∣=0 in the interval −π4≤x≤π4 is

Answer»

The number of distinct real roots of
sinxcosxcosxcosxsinxcosxcosxcosxsinx
=0
in the interval π4xπ4 is



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