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Combining like terms $7x$ and $-13x$
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$derivdef\left(-6x+x-9x\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of 7x-13xx-9x using the definition. Combining like terms 7x and -13x. Combining like terms -6x and x. Combining like terms -5x and -9x. Find the derivative of -14x 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 -14x. Substituting f(x+h) and f(x) on the limit, we get.