1) (–∞, 0] 2) [0, ∞) 3) R 4) None of these Solution: (3) R Since f’ (x) = 3 / [x + 1]2 is greater than 0 in interval (- ∞, ∞),... View Article
(1) [cot x log cos x + tan x log sin x)]/(log cos x)2 (2) [ tan x log cos x + cot x log sin x)]/(log cos x)2 (3) [ cot x log cos x + tan x... View Article
1) sec x asec x – tan x 2) sin x a tan x – sec x 3) sin x asec x – tan x 4) a sec x – tan x Solution: Let u = asec x v = atan x... View Article
(1) cot θ (2) tan θ (3) sin θ (4) cos θ Solution: y = a sin θ dy/dθ = a cos θ x = a{cos θ + log tan(θ/2)} dx/dθ = a {-sin θ +... View Article