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Subtract the values $0$ and $-4$
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$derivdef\left(-4\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of 240/x+-240/(x+3)=0-4 using the definition. Subtract the values 0 and -4. Find the derivative of -4 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 -4. Substituting f(x+h) and f(x) on the limit, we get. Subtract the values 4 and -4. Zero divided by anything is equal to zero.