✨ Euler’s Identity: Euler’s identity is one of the most elegant and remarkable equations in mathematics. It states that the exponential of the imaginary unit multiplied by pi plus one equals zero. This simple-looking formula connects five fundamental mathematical constants — the base of natural logarithms, the imaginary unit, pi, one, and zero. It beautifully unites algebra, geometry, and analysis. Euler’s identity has wide applications in complex analysis, electrical and electronic engineering,