Math Chapter Wise question with answer

Q01 If a function on R is defined by f(x) = 1 when x is rational and f(x) = –1 when x is irrational, then f(x) is disco... English · OAVS TGT 2018 Q02 If Signum function () x f x | x | = when x 0 and f(x)=0 when x = 0, then it is discontinuous at: English · OAVS TGT 2018 Q03 The function f is defined as () ≠ kcosx π,whenx π - 2x 2 f x = π 3, when x = 2 If f(x) is continuous at x =, 2 π th... English · UKPSC GIC 2018 Q04 If 5 x, when x 2 2 f(x) 1, when x 2 3 x, when x 2 2 < = − > then the English · PGT 2009 Q05 If x 1, when x 2 f(x) 2x 1, when x 2 + < = − ≥ then f' (2) equals English · PGT 2009 Q06 If x, when x is rational 1-x, when x is irrational f(x) {, = then f is continuous at English · Rajasthan TGT 2011