Maths · One-one, into and onto functions
If \) is a proper subset of , then is called a/an function
If \( f(A) \) is a proper subset of \( B \), then \( f \) \( A \rightarrow B \) is called a/an \( \ldots \ldots . . \) function
- A. into
- B. onto
- C. one - one
- D. indentity
Step-by-step solution
If f(A) is a proper subset of B, then not every element of B has a preimage, so the function is into. Onto requires f(A)=B, one-one requires injectivity, identity requires f(x)=x.
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