Question

If A = -2 π-2 - { x: ²2² < x < * = ² }, B = {u: -1<u≤1} 5 5 y = cos (5x + 2) then the mapping f: A → B and f(x) is
1

Onto but not one - one

2

Both one - one and onto

3

One- one but not onto

4

Neither one - one nor onto​

Answer 1

Answer:

I hope 2 is the answer

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