<p>Can anybody explain these questions from the Official Study Guide for Math Subject Tests?
(from practice test 1) Thanks so much!</p>
<ol>
<li><p>what value does lnx / x-1 approach as x approaches 1?</p></li>
<li><p>what is the period of y= 2tan(3piex + 4)</p></li>
<li><p>what shift of graph y=x^2 would result in graph of y= x^2 -2x +k where k is constant greater than 2?</p></li>
</ol>
<ol>
<li><p>type that function into y1, then go to table and type in numbers close to 1 such as .99999 and 1.0000001. The number that you get in the y section is the answer. Or graph it and find the limit</p></li>
<li><p>period for tan is pi/(the coefficient of x) in this case pi/3pi = 1/3</p></li>
<li><p>graph y = x^2 and the other function with k being slightly above 2. Look at what you need to do to make those graphs appear as 1.</p></li>
</ol>