What is the derivative of $f (x) = sin (x) - cos (x)$ $f(x) = sin(x)-cos(x)$ ?

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Answer 1 · 2015-11-11T10:55:00

$cos x + sin x$ $cos x + sin x$

Derivative of $sin x$ $sin x$ is $cos x$ $cos x$ and derivative of $cos x$ $cosx$ is $- sin x$ $-sinx$ .

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What is the derivative of f(x) = sin(x)-cos(x)f(x)=sin(x)−cos(x)f(x) = sin(x)-cos(x)?