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$\frac{d}{ds}\left(\left(2r+s\right)\left(2r-2t\right)\right)$
Learn how to solve differential calculus problems step by step online. \left( 2r + s \right)\left( 2r - 2t \right). Math interpretation of the question. Apply the product rule for differentiation: (f\cdot g)'=f'\cdot g+f\cdot g', where f=. The derivative of a sum of two or more functions is the sum of the derivatives of each function. The derivative of a sum of two or more functions is the sum of the derivatives of each function.