Problem of the Week

Updated at Jun 30, 2014 8:59 AM

To get more practice in calculus, we brought you this problem of the week:

How can we solve for the derivative of \(9\tan{x}\)?

Check out the solution below!



\[\frac{d}{dx} 9\tan{x}\]

1
Use Constant Factor Rule: \(\frac{d}{dx} cf(x)=c(\frac{d}{dx} f(x))\).
\[9(\frac{d}{dx} \tan{x})\]

2
Use Trigonometric Differentiation: the derivative of \(\tan{x}\) is \(\sec^{2}x\).
\[9\sec^{2}x\]

Done
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