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- Find the derivative using the definition
- Exact Differential Equation
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The derivative of a sum of two or more functions is the sum of the derivatives of each function
Learn how to solve sum rule of differentiation problems step by step online.
$1+\frac{d}{dx}\left(\cos\left(x+y\right)\right)=0$
Learn how to solve sum rule of differentiation problems step by step online. Find the implicit derivative d/dx(x+cos(x+y))=0. The derivative of a sum of two or more functions is the sum of the derivatives of each function. The derivative of the cosine of a function is equal to minus the sine of the function times the derivative of the function, in other words, if f(x) = \cos(x), then f'(x) = -\sin(x)\cdot D_x(x). The derivative of a sum of two or more functions is the sum of the derivatives of each function.