If the function f : R→ A given by $f(x)=\frac{x^2}{x^2+2}$ is a surjection, then A is equal to
Answer & explanation
Correct answer: option 4
Range of $\frac{x^2}{x^2+2}=A⇒x^2=\frac{2A}{1-A}≥0⇒0≤A<1$
If the function f : R→ A given by $f(x)=\frac{x^2}{x^2+2}$ is a surjection, then A is equal to
Correct answer: option 4
Range of $\frac{x^2}{x^2+2}=A⇒x^2=\frac{2A}{1-A}≥0⇒0≤A<1$