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Add the values $20$ and $90$
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$derivdef\left(110+51\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of 20+90+51 using the definition. Add the values 20 and 90. Add the values 110 and 51. Find the derivative of 161 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 161. Substituting f(x+h) and f(x) on the limit, we get. Subtract the values 161 and -161.