The '''constant-multiple rule''' in [[differentiation]] is that the [[derivative]] of a function <math>f(x)</math> multiplied by a [[scalar]] <math>a</math> is:
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The '''constant-multiple rule''' in [[differentiation]] is that the [[Derivative_(calculus)|derivative]] of a function <math>f(x)</math> multiplied by a [[scalar]] <math>a</math> is: