1.

Number of real solutions of the equation (tanx + 1) (tan x + 3) (tan x + 5) (tan x +7)= 33

Answer»

will be two in the INTERVAL `[-pi//2, pi//2]`
will be FOUR in the interval `[-pi//2, pi//2]`
will be three in the interval `[- pi//2, pi]`
will be four in the interval `[-pi//2,pi]`

ANSWER :A::D


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