period of a function

<p>What is the period of y = 2tan(3piX + 4)?</p>

<p>I thought the period would be 2/3 since you use the formula 2pi/b. The period is actually 1/3. Can someone explain why...?</p>

<p>Period of tangent is just pi/(coefficient of x) which would be pi/3pi = 3.</p>