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The derivative of a sum of two or more functions is the sum of the derivatives of each function
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$\frac{d}{db}\left(4a\right)+\frac{d}{db}\left(-1\right)+\frac{d}{db}\left(-4ab\right)+\frac{d}{db}\left(b\right)$
Learn how to solve differential calculus problems step by step online. Find the derivative of 4a-1-4abb. The derivative of a sum of two or more functions is the sum of the derivatives of each function. The derivative of the constant function (-1) is equal to zero. The derivative of the linear function is equal to 1. The derivative of the linear function times a constant, is equal to the constant.