7. Prove that both of \( \int_{1}^{\infty} \frac{1}{\sqrt{x}} dx \) and \( \int_{0}^{1} \frac{1}{\sqrt{x}} dx \) diverge. (10 分)
7. Prove that both of \( \int_{1}^{\infty} \frac{1}{\sqrt{x}} dx \) and \( \int_{0}^{1} \frac{1}{\sqrt{x}} dx \) diverge. (10 分)