Explanation : Leonhard Euler was one of the most prolific mathematicians in history, publishing over 800 papers throughout his lifetime. He revolutionized mathematics by creating much of the notation we use today, including e, i, f(x), and the summation symbol. His most famous contribution is Euler's identity, e^ (int) 1 = 0, often called the most beautiful equation in mathematics as it connects five fundamental constants. He also made groundbreaking work in calculus, number theory, graph theory

Zenx Hustle1 on Instagram: "This graph shows time on the X-axis and weld quality consistency on the Y-axis. The line representing automatic orbital welding remains high and stable over time, indicating uniform, defect-free welds. In contrast, a second line for manual welding fluctuates, showing variations caused by human fatigue and skill differences. The graph emphasizes how China’s adoption of this technology boosts industrial efficiency, worker safety, and large-scale infrastructure developme