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Multiply $1384$ times $-1$
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$derivdef\left(\arctan\left(\frac{170\cdot -1}{-1384}\right)\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of arctan((170*-)/(1384*-)) using the definition. Multiply 1384 times -1. Multiply 170 times -1. Divide -170 by -1384. Find the derivative of \arctan\left(\frac{85}{692}\right) 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 \arctan\left(\frac{85}{692}\right). Substituting f(x+h) and f(x) on the limit, we get.