Self-test Questions


1	A quadratic function has the form

		A)	TRUE
		B)	FALSE

2	If a quadratic function has no real roots then it does not cross the ________ axis

		A)	vertical
		B)	equatorial
		C)	horizontal
		D)	centrifugal
		E)	y-

3	At which point does the function cross the horizontal (x) axis?

		A)	At the origin
		B)	At x = 0.5 and x = 1
		C)	At x = 1 and x = 2
		D)	At x = 2 and x = 4
		E)	At x = 4 and x = 8

4	The point where a function crosses the vertical axis is called a

		A)	cusp
		B)	root
		C)	turning point
		D)	intercept
		E)	coefficient

5	A quartic function has up to 4 coefficients

		A)	TRUE
		B)	FALSE

6	What is the general form for a quadratic function?

		A)	y = a + bx
		B)
		C)
		D)
		E)

7	Points that hyperbolic functions approach points but never actually reach are called:

		A)	roots
		B)	logarithms
		C)	matrices
		D)	hyperbolae
		E)	asymptotes

8	What sort of equation might best describe a firm’s average function if its total cost function is linear?

		A)	Cost = (a / x) + b
		B)	Cost = ax
		C)	Cost = x(ax - 1)
		D)
		E)	Cost = x / a

9	The general form of a hyperbolic function is y = a + b (x + c)

		A)	TRUE
		B)	FALSE

10	The function is an example of an simple exponential function.

		A)	TRUE
		B)	FALSE

11	What features does a simple exponential function have if a is less than 0?

		A)	It is constant.
		B)	It has asymptotes.
		C)	It has oscillations.
		D)	It is a hyperbola.
		E)	It has oscillations and an asymptote.

12	The simple exponential function ________ as x is positive and gets bigger?

		A)	approaches an asymptote
		B)	oscillates
		C)	grows more and more quickly
		D)	decreases more and more quickly
		E)	is constant

13	What is the interpretation of the coefficient in the multivariate function ?

		A)	The value of y when and are set at zero.
		B)	The root of the function when
		C)	The asymptote for when and get bigger
		D)	The slope of a flat surface in the direction of the axis
		E)	The intercept when

14	A multivariate function describes the relationship between one dependent and more than one independent variable.

		A)	TRUE
		B)	FALSE

15	A point where a multivariate function is at a maximum for some variables and at a minimum for others is called a:

		A)	Multiple root
		B)	Minimax point
		C)	Flat point
		D)	Local maximum
		E)	Saddle point

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