Question

10 numerical question with their solution based on concentration of solution from is matter around us I am asking

Answer 1

$\int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \lim_{n \to \infty} a_n \frac{x}{y} \frac{x}{y} \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}}$