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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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$\frac{d}{dx}\left(3x\right)+\frac{d}{dx}\left(-7\right)$
Learn how to solve problems step by step online. Find the derivative of 2x-(x-1)^1/2=3x-7. 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 (-7) is equal to zero. The derivative of the linear function times a constant, is equal to the constant. The derivative of the linear function is equal to 1.