Exam 15: Functions and Precalculus

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Given f(x)=x2+x2x1f ( x ) = \frac { x ^ { 2 } + x - 2 } { x - 1 } , find a linear function gg which is identical to ff

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Find the domain and range of the piecewise defined function: f(x)={1x51x5<x<5x5x>5f ( x ) = \left\{ \begin{array} { c c } - 1 & x \leq - 5 \\\frac { 1 } { x } & - 5 < x < 5 \\x - 5 & x > 5\end{array} \right.

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(-3, 4) is on the graph of an odd function f(x)f ( x ) find another point on the graph of f(x)f ( x )

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Given y=x24x8y = x ^ { 2 } - 4 x - 8 , for what value(s) of XX is y=3y = - 3 ?

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Find the domain of f(x)=x29x+3f ( x ) = \frac { x ^ { 2 } - 9 } { \sqrt { x + 3 } }

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Find the equation of a linear function whose graph passes through the points (2, -1) and (-3, 2).

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Table below defines two functions ff and gg Create an additional row for the table for the function (fg)(x)( f \circ g ) ( 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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Write f(x)=4x2f ( x ) = \left| 4 - x ^ { 2 } \right| as a piecewise function.

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Find the domain and range of f(x)=9x2x+3f ( x ) = \frac { \sqrt { 9 - x ^ { 2 } } } { x + 3 }

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Which of the following points lie on the graph of f(x)=3x+4f ( x ) = \sqrt { 3 x + 4 } ?A (-3, 6) B (4, 4) C (0, 4)

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Is f(x)=2x3x2+2f ( x ) = \frac { 2 x ^ { 3 } } { x ^ { 2 } + 2 } an even function, an odd function or neither? Explain.

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Solve the following equation for t, on the interval [0,π][ 0 , \pi ] : 2cos2t=22 \cos 2 t = \sqrt { 2 }

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Write the following expression as an algebraic expression that does not involve trigonometric or inverse trigonometric functions cos(2cos15x)\cos \left( 2 \cos ^ { - 1 } 5 x \right)

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Write all the transformations applied to obtain the graph of y=2x+43y = | 2 x + 4 | - 3 from the graph of y=xy = | x |

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Write the following expression as an algebraic expression that does not involve trigonometric or inverse trigonometric functions tan2(sec1x)\tan ^ { 2 } \left( \sec ^ { - 1 } x \right)

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Write f(x)=5+3x2f ( x ) = 5 + | 3 x - 2 | as a piecewise function.

(Multiple Choice)
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Find an equation for a polynomial function whose graph passes through the points (3, 0), (-1, 0) and (-3, 0).

(Multiple Choice)
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For the polynomial f(x)=x3(3x)2(1+x2)f ( x ) = x ^ { 3 } ( 3 - x ) ^ { 2 } \left( 1 + x ^ { 2 } \right) , determine the leading coefficient and the degree.

(Multiple Choice)
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Write all the transformations applied to obtain the graph of y=2x+1y = 2 - \sqrt { x + 1 } from the graph of y=xy = \sqrt { x }

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Given g(x)={3x<1x+1x1g ( x ) = \left\{ \begin{array} { c c } 3 & x < 1 \\\sqrt { x + 1 } & x \geq 1\end{array} \right. Find g(t21)g \left( t ^ { 2 } - 1 \right)

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