<p>Could somebody please help me with questions #8 and 14. I confused on how to solve them.</p>
<p>Thanks</p>
<p><a href=“http://www.cardinalnewman.org/s/206/images/editor_documents/Greco/calc_ap_practice_exam.pdf[/url]”>http://www.cardinalnewman.org/s/206/images/editor_documents/Greco/calc_ap_practice_exam.pdf</a></p>
<p>For number 8, remember the formula for the Trapezoid Rule, which is
((b-a)/(2n))(sum of all the f(x)'s with a coefficient of 2 on all of them except the first and the last). Thus, (6/6)(4+2k+16+12)=52. Solve for k, and you get k=10 (D)</p>
<p>For number 14, use L’hopital’s rule and differentiate both the numerator and denominator to get (e^(2+h))/1 which at limit of h=0 is e^2 (D)</p>
<p>Thanks so much that really helped. Also need help on 15,21 and 27.</p>