The derivative of the linear function is equal to $1$
$x-4+\left(x+1\right)\frac{d}{dx}\left(x\right)$
Intermediate steps
7
The derivative of the linear function is equal to $1$
$x-4+x+1$
Final answer to the problem
$x-4+x+1$
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The derivative of a function of a real variable measures the sensitivity to change of a quantity (a function value or dependent variable) which is determined by another quantity (the independent variable). Derivatives are a fundamental tool of calculus.