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Add the values $3$ and $8$
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$derivdef\left(9x+11\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of 1/8x+x1*-3x+6=9x+3+8 using the definition. Add the values 3 and 8. Find the derivative of 9x+11 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 9x+11. Substituting f(x+h) and f(x) on the limit, we get. Multiply the single term 9 by each term of the polynomial \left(x+h\right). Multiply the single term -1 by each term of the polynomial \left(9x+11\right).