Exam 15: Functions and Precalculus

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Find the exact value of 6log263log296 \log _ { 2 } 6 - 3 \log _ { 2 } 9

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Given f(x)=2x+1f ( x ) = 2 x + 1 and h(x)=2x2+4x+1h ( x ) = 2 x ^ { 2 } + 4 x + 1 , find a function gg such that f(g(x))=h(x)f ( g ( x ) ) = h ( x )

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If f(x)=2x1f ( x ) = \sqrt { 2 x - 1 } , find f(1+h)f(1)h\frac { f ( 1 + h ) - f ( 1 ) } { h }

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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(x)3f ( x ) - 3

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Find the domain and range of f(x)=2x+1f ( x ) = \sqrt { 2 - x } + 1

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Given f(x)=x2+1f ( x ) = x ^ { 2 } + 1 and g(x)=3x+2g ( x ) = 3 x + 2 , find all values of XX such that f(g(x))=g(f(x))f ( g ( x ) ) = g ( f ( x ) )

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Write f(x)=32xf ( x ) = | 3 - 2 x | as a piecewise function.

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Given that f(x)=1x+1f ( x ) = \frac { 1 } { x } + 1 and g(x)=11+xg ( x ) = \frac { 1 } { 1 + x } , find (fg)(2)( f \circ g ) ( 2 ) , and their domains.

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Solve the following equation for x, on the interval [0,π][ 0 , \pi ] : 2sin2x=12 \sin 2 x = 1

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Express the following as a polynomial function of X:X : 5exp(ln3)+2ln(e3x(ex)2)5 \exp ( \ln 3 ) + 2 \ln \left( e ^ { 3 x } \left( e ^ { x } \right) ^ { 2 } \right)

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Find the equation of a linear function whose graph has slope -2 and passes through the point (-1, 2). Write your answer in slope-intercept form.

(Multiple Choice)
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Express f(x)=1+x3f ( x ) = \sqrt [ 3 ] { 1 + \sqrt { x } } as a composition of three functions: gg and hh such that f=ghf = g \circ h

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Solve the following equation for XX : 5e2x=65 e ^ { - 2 x } = 6

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Find the domain and range of f(x)=1x3f ( x ) = \frac { 1 } { \sqrt { x - 3 } }

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Which of the following expressions is/are defined? A. sin1(15)\sin ^ { - 1 } \left( - \frac { 1 } { 5 } \right) B. sin1(32)\sin ^ { - 1 } \left( \frac { 3 } { 2 } \right) C. tan1(2)\tan ^ { - 1 } ( 2 )

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Write the following expression as an algebraic expression that does not involve trigonometric or inverse trigonometric functions sin(cos13x)\sin \left( \cos ^ { - 1 } 3 x \right)

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Table below defines two functions ff and gg Create an additional row for the table for the function (gf)(x)( g \circ f ) ( x ) x 0 1 2 3 4 5 6 f(x) 0 1 3 2 3 0 2 g(x) 1 0 1 1 0 1 0

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Find the domain and range of f(x)=2+ex1f ( x ) = 2 + e ^ { x - 1 }

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Describe the function f(t)=5t+1f ( t ) = - 5 t + 1 as a set of ordered pairs.

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f(x)={x2+3x<03xx0f ( x ) = \left\{ \begin{array} { r r } x ^ { 2 } + 3 & x < 0 \\3 - x & x \geq 0\end{array} \right. Calculate f(1),f(0)f ( - 1 ) , f ( 0 ) and f(2)f ( 2 )

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