Let A = (2, 3, 5), B = (– 1, 3, 2) and C = (a, 5, b) be the vertices of triangle ABC. If the median through A is equally inclined to the coordinate axes, then
Let a, b, c be three real numbers such that a < b < c. Let f(x) be continuous ∀ x ∈[a,c] and differentiable ∀ x ∈(a,c). If f′′(x)>0 ∀ x ∈(a,c) then