Question

лллл
If A = 0,
and f:A --В, f(x) = cosx is surjесtiоn find B.
​

Answer 1

Answer:

Injectivity : We know that f(0)=cos0=1 and f(2π)=cos2π=1.

So, different elements in R may have the same image. Hence, f is not an injection.

Surjectivity : Since the values of cosx lie between −1 and 1, it follows that the range of f(x) is not equal to its co-domain. So, f is not a surjection.

Step-by-step explanation:

hope it will help you

make me brilliant