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Subtract the values $2$ and $-9$
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$derivdef\left(-2-1\cdot -7\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of -2-(2-9) using the definition. Subtract the values 2 and -9. Multiply -1 times -7. Subtract the values 7 and -2. Find the derivative of 5 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 5. Substituting f(x+h) and f(x) on the limit, we get.