Exam 2: Functions

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Graph the function. - y=x43y=\sqrt{x-4}-3  Graph the function. - y=\sqrt{x-4}-3

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Simplify the expression. - lne5/7\ln \mathrm { e } ^ { 5 / 7 }

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Solve the problem. -A bacteria colony doubles in 5 hr. How long does it take the colony to triple? Use N N=N02t/T\mathrm { N } = \mathrm { N } _ { 0 } 2 ^ { \mathrm { t } / \mathrm { T } } , where N0 is the initial number of bacteria and T is the time in hours it takes the colony to double. (Round to the nearest Hundredth, as necessary.)

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Find the domain and range of the inverse of the given function. - f(x)=1xf ( x ) = - \frac { 1 } { x }

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Using the graph below, find the domain and range of the given function, and sketch the graph.  Using the graph below, find the domain and range of the given function, and sketch the graph.   - y=-f(x)    - y=f(x)y=-f(x)  Using the graph below, find the domain and range of the given function, and sketch the graph.   - y=-f(x)

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Provide an appropriate response. -Consider the graph of f(x)=9x2,0x1\mathrm { f } ( \mathrm { x } ) = \sqrt { 9 - \mathrm { x } ^ { 2 } } , 0 \leq \mathrm { x } \leq 1 . What symmetry does the graph have? Is f\mathrm { f } its own inverse?

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Determine an appropriate viewing window for the given function and use it to display its graph. - f(x)=0.7x6x5+6x45x37x2+x3f ( x ) = - 0.7 x ^ { 6 } - x ^ { 5 } + 6 x ^ { 4 } - 5 x ^ { 3 } - 7 x ^ { 2 } + x - 3  Determine an appropriate viewing window for the given function and use it to display its graph. - f ( x ) = - 0.7 x ^ { 6 } - x ^ { 5 } + 6 x ^ { 4 } - 5 x ^ { 3 } - 7 x ^ { 2 } + x - 3

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Express the given quantity in terms of sin x or cos x. - sin(4πx)\sin ( 4 \pi - x )

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Graph the function. - y=(3x)2/33y=(-3 x)^{2 / 3}-3  Graph the function. - y=(-3 x)^{2 / 3}-3

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Determine if the function is even, odd, or neither. - f(x)=6x+4f ( x ) = \frac { - 6 } { x + 4 }

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Express the given function as a composite of functions f and g such that y y=f(g(x))y = f ( g ( x ) ) - y=85x+1y = \frac { 8 } { \sqrt { 5 x + 1 } }

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Find the formula for the function. -Express the perimeter of an isosceles triangle with side lengths x, 5x, and 5x as a function of the side length.

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One of sin x, cos x, and tan x is given. Find the other two if x lies in the specified interval. - tanx=512,x\tan x = \frac { 5 } { 12 } , \quad x in [π,3π2]\left[ \pi , \frac { 3 \pi } { 2 } \right]

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Graph the function. Determine the symmetry, if any, of the function. - y=1xy = \frac { 1 } { x }  Graph the function. Determine the symmetry, if any, of the function. - y = \frac { 1 } { x }

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Is the function graphed below one-to-one? -Is the function graphed below one-to-one? -

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Express as a single logarithm and, if possible, simplify. - ln(3x29x)+ln(13x)\ln \left( 3 x ^ { 2 } - 9 x \right) + \ln \left( \frac { 1 } { 3 x } \right)

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Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function. - f(x)=x47x2+3xf ( x ) = x ^ { 4 } - 7 x ^ { 2 } + 3 x

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Express the given function as a composite of functions f and g such that y y=f(g(x))y = f ( g ( x ) ) - y=6x2+5y = \frac { 6 } { x ^ { 2 } } + 5

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Is the function graphed below one-to-one? -Is the function graphed below one-to-one? -

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Express the given quantity in terms of sin x or cos x. - cos(3π+x)\cos ( 3 \pi + x )

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