Question

if A={1,2,3,4},B={w,x,y,z},f={(1,w),(2,x),(3,y),(4,z)} then prove that f is both one to one and onto

Answer 1

Answer:

I dont no I. am confused plese sorry

Answer 2

Answer:

a={1,2,3,4},b={w,x,y,z} and f{1,w)(2,x)(3,y)(4,z)}then prove that 'f' is both one-one and onto