Home › Bihar Board Class 12 (Commerce) › Mathematics › Relations and Functions › A function f : X → Y is one-one when f(x1) = f(x…
A function f : X → Y is one-one when f(x1) = f(x2) implies what?
Ay1 = y2 for all y
Bx1 = x2 in X
Cx1 = 0 in X
Df(x) = 0 in Y
Answer & Solution
Correct answer: B. x1 = x2 in X
Distinct inputs must give distinct images, equivalently equal images force equal inputs.
Related questions
Which two relations on a set A are called the extreme relations?If f(4) = 5 and g(5) = 11, what is gof(4)?A function that is not one-one is described by which term?How are functions related to the general idea of a relation?A relation R is transitive when (a1, a2) and (a2, a3) in R imply what?The empty relation and the universal relation are together known as what?The inverse g of an invertible f : X → Y satisfies which pair of equations?For f : N → Y with f(x) = 4x + 3 onto Y, which formula gives the inverse g(y)?