Statistics for AP Calculus AB #1

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Question	Answer	% Correct
lim x->9 (8x) Continuous or discontinuous?	Continuous	87%
Which of the following functions have two infinite x and y discontinuities, each the same value?	1/x	69%
What is a tangent line of a function?	The line that touches exactly one point on a function	57%
What is a secant line of a function?	Any line between two points on a function	51%
Which of the following is a method of algebraically finding the a- and a+ limits of a function with a jump discontinuity, given that x=a?	Use a table, creating a list of x-values from each side of a that get closer and closer to a, and by plugging them into the function, you can get an answer that approximates the limits of both sides.	51%
What is the limit of (5x^3-7)/(2x^3+5) as x approaches infinity?	5/2	48%
How do we algebraically evaluate the limits of functions approaching infinity?	Rule out all unneeded constants and smaller terms and evaluate the term(s) with the degree of the equation.	45%
How can you best algebraically evaluate limits that have radicals in them?	Use the conjugate method by multiplying the numerator and denominator by a certain number that simplifies the fraction to something you can evaluate without getting an undefined.	41%
If a piecewise function has f(x) values defined for only x<6 and x>6 then is it continuous?	Jump Discontinuity	40%
What is a cosecant line of a function?	Doesn't exist	35%