To calculate the limit of (e^h - 1)/h as h approaches 0, one effective method is to apply L'Hôpital's Rule, which is useful for resolving indeterminate forms. By differentiating the numerator and denominator, the limit simplifies to e^h as h approaches 0. Evaluating e^h at h = 0 gives a result of 1. This confirms that the limit of (e^h - 1)/h as h approaches 0 is indeed 1. Understanding this limit is crucial in calculus and helps illustrate the derivative of the exponential function at zero.