Exam 15: Functions and Precalculus

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Find the domain of f(x)=ln(x3)ln(x+1)f ( x ) = \frac { \ln ( x - 3 ) } { \ln ( x + 1 ) }

(Multiple Choice)
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Suppose (3, 7) is a point on the graph of f(x)f ( x ) , find a point on the graph of f(x2)f ( x - 2 )

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Write all the transformations applied to obtain the graph of y=x2+4xy = - x ^ { 2 } + 4 x from the graph of y=x2y = x ^ { 2 }

(Essay)
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Solve the following equation for x cos(sin1x)=0\cos \left( \sin ^ { - 1 } x \right) = 0

(Short Answer)
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Find the average rate of change of the function f(x)=x+1f ( x ) = \sqrt { x + 1 } on the interval [0, 8].

(Multiple Choice)
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Is g(x)=3x2+1g ( x ) = \frac { - 3 } { x ^ { 2 } + 1 } an even function, an odd function or neither? Explain.

(Essay)
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Explain why the graph of f(x)=(x2)(x+3)(x+3)2f ( x ) = \frac { ( x - 2 ) ( x + 3 ) } { ( x + 3 ) ^ { 2 } } does not have a hole in it at x=3x = - 3 ?

(Essay)
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Solve the following equation for XX : ex4xex=0e ^ { x } - 4 x e ^ { x } = 0

(Multiple Choice)
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Find an equation for a power function whose graph passes through the points (0, 0) and (2, 5).

(Essay)
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Is f(x)=sin2xf ( x ) = \sin ^ { 2 } x an even function, odd function or neither?

(Short Answer)
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(2, 3) is on the graph of an even function g(x)g ( x ) find another point on the graph of g(x)g ( x )

(Multiple Choice)
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Find the inverse of f(x)=25xf ( x ) = - \sqrt { 2 - 5 x }

(Essay)
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Express f(x)=(2+cos(x3))2f ( x ) = \left( 2 + \cos \left( x ^ { 3 } \right) \right) ^ { 2 } as a composition of two functions: gg and hh such that f=ghf = g \circ h

(Essay)
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Complete the entries in the table below to make ff an even function x -3 -2 -1 0 1 2 3 f(x) 5 -2 3

(Essay)
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Solve the following equation for XX : ln(6x)3ln(x2)=ln(3)\ln ( 6 x ) - 3 \ln \left( x ^ { 2 } \right) = \ln ( 3 )

(Multiple Choice)
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Expand the logarithm in terms of sums and differences: lnx3cos2xx2+1\ln \frac { x ^ { 3 } \cos ^ { 2 } x } { \sqrt { x ^ { 2 } + 1 } }

(Essay)
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Suppose (3, 7) is a point on the graph of f(x)f ( x ) , find a point on the graph of 2f(x+1)32 f ( x + 1 ) - 3

(Multiple Choice)
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Find the equation of a linear function whose graph is perpendicular to x2y+2=0x - 2 y + 2 = 0 and passes through the point (1, 3).

(Multiple Choice)
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Let f(x)=2x3+3x+1f ( x ) = 2 x ^ { 3 } + 3 x + 1 Find XX if f1(x)=1f ^ { - 1 } ( x ) = - 1

(Multiple Choice)
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Sketch the graph of a possible rational function ff with roots at x=1x = - 1 and x=3x = 3 , a vertical asymptote at x=2x = 2 , and a horizontal asymptote at y=2y = - 2

(Essay)
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