List of top Mathematics Questions on Equations asked in LPUNEST

Let \(S=\{x\in \mathbb{R}\mid x\ge 0 \text{ and } 2|\sqrt{x}-3|+\sqrt{x}(\sqrt{x}-6)+6=0\}\), then \(S=\)
If \(2f(x)-3f\!\left(\dfrac{1}{x}\right)=x^2,\; x\neq 0\), then \(f(2)=\)