Which of the following functions from f : A → A are invertible, where A = [–1, 1]
Answer & explanation
Correct answer: option 2
$g(x)=\sin \left(\frac{\pi x}{2}\right)$ is both one–one and onto.
Hence (2) is the correct answer.
Which of the following functions from f : A → A are invertible, where A = [–1, 1]
Correct answer: option 2
$g(x)=\sin \left(\frac{\pi x}{2}\right)$ is both one–one and onto.
Hence (2) is the correct answer.