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7 bytes added ,  02:04, November 14, 2007
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The '''chain rule''' in [[calculus]] is a formula for determining the [[derivative]] of a composite function:
 
The '''chain rule''' in [[calculus]] is a formula for determining the [[derivative]] of a composite function:
   −
:<math>\frac {dy}{dx} = \frac {dy} {du} \frac {du}{dx}.</math>
+
:<math>\frac {dy}{dx} = \frac {dy} {du} \times \frac {du}{dx}.</math>
 
[[category:mathematics]]
 
[[category:mathematics]]
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