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Simplify the fraction $\frac{x}{x}$ by $x$
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$1x$
Learn how to solve definition of derivative problems step by step online. Find the derivative of x/xx using the definition. Simplify the fraction \frac{x}{x} by x. Any expression multiplied by 1 is equal to itself. Any expression multiplied by 1 is equal to itself. Find the derivative of x 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 x. Substituting f(x+h) and f(x) on the limit, we get.