MathematicsEasy66×since 2002Q4071Considering only the principal values of inverse functions, the set A = { x ≥\ge≥ 0: tan^−-−1(2x) + tan^−-−1(3x) = π4{\pi \over 4}4π}Acontains two elementsBcontains more than two elementsCis an empty setDis a singletonCheck answerSkip