Question

please answer me guys​

Answer 1

Step-by-step explanation:

it is not solved by problematically it is based on taking values to it

one -one function

for example if we take x =1them f(x)=1

if x=-1 then f(x)=-1 so for every value of domain it has unique image so it is one-time function

onto function

here for every value of x it has image inB so it is onto function

therefore it is bijection because it is satisfying both one-one and onto