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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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$\frac{d}{da}\left(\cos\left(a\right)^2\right)+\frac{d}{da}\left(\sin\left(a\right)^2\cos\left(a\right)\right)$
Learn how to solve problems step by step online. Find the derivative of cos(a)^2+sin(a)^2cos(a). The derivative of a sum of two or more functions is the sum of the derivatives of each function. Apply the product rule for differentiation: (f\cdot g)'=f'\cdot g+f\cdot g', where f=. The power rule for differentiation states that if n is a real number and f(x) = x^n, then f'(x) = nx^{n-1}. The power rule for differentiation states that if n is a real number and f(x) = x^n, then f'(x) = nx^{n-1}.