The integral ∫a^x dx is correctly expressed as a^x/ln a when a is positive and not equal to 1. The function a^x is not defined for negative values of a, making the use of absolute values unnecessary in this context. If a is greater than zero, the absolute value notation does not apply. Therefore, the answer does not change based on the inclusion of absolute values. Understanding the conditions on a is crucial for determining the correct form of the antiderivative.