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Subtract the values $-8$ and $-5$
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$derivdef\left(-13-6\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of -8-5+-6 using the definition. Subtract the values -8 and -5. Subtract the values -13 and -6. Find the derivative of -19 using the definition. Apply the definition of the derivative: \displaystyle f'(x)=\lim_{h\to0}\frac{f(x+h)-f(x)}{h}. The function f(x) is the function we want to differentiate, which is -19. Substituting f(x+h) and f(x) on the limit, we get. Subtract the values 19 and -19.