Exam 1: Functions and Limits

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Find the limit Find the limit   , if it exists. , if it exists.

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Many physical quantities are connected by inverse square laws, that is, by power functions of the form Many physical quantities are connected by inverse square laws, that is, by power functions of the form   . In particular, the illumination of an object by a light source is inversely proportional to the square of the distance from the source. Suppose that after dark you are in a room with just one lamp and you are trying to read a book. The light is too dim and so you move   the distance to the lamp. How much brighter is the light? . In particular, the illumination of an object by a light source is inversely proportional to the square of the distance from the source. Suppose that after dark you are in a room with just one lamp and you are trying to read a book. The light is too dim and so you move Many physical quantities are connected by inverse square laws, that is, by power functions of the form   . In particular, the illumination of an object by a light source is inversely proportional to the square of the distance from the source. Suppose that after dark you are in a room with just one lamp and you are trying to read a book. The light is too dim and so you move   the distance to the lamp. How much brighter is the light? the distance to the lamp. How much brighter is the light?

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Find the domain and sketch the graph of the function. What is its range? Find the domain and sketch the graph of the function. What is its range?

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Find the function Find the function   ,   ,   and its domain if   ,   and   ,   . , Find the function   ,   ,   and its domain if   ,   and   ,   . , Find the function   ,   ,   and its domain if   ,   and   ,   . and its domain if Find the function   ,   ,   and its domain if   ,   and   ,   . , Find the function   ,   ,   and its domain if   ,   and   ,   . and Find the function   ,   ,   and its domain if   ,   and   ,   . , Find the function   ,   ,   and its domain if   ,   and   ,   . .

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Find the limit Find the limit   . .

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Find the limit Find the limit   . .

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Classify the function as a Polynomial function, a Trigonometric function, an algebraic function, or other. Classify the function as a Polynomial function, a Trigonometric function, an algebraic function, or other.

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By graphing the function By graphing the function   and zooming in toward the point where the graph crosses the y-axis, estimate the value of  and zooming in toward the point where the graph crosses the y-axis, estimate the value of By graphing the function   and zooming in toward the point where the graph crosses the y-axis, estimate the value of

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Find the domain of the function. Find the domain of the function.   =  = Find the domain of the function.   =

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Find the value of the limit. Find the value of the limit.

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Consider the following function. Consider the following function.   Determine the values of a for which   exists. Determine the values of a for which Consider the following function.   Determine the values of a for which   exists. exists.

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Complete the table by computing Complete the table by computing   at the given values of x, accurate to five decimal places. Use the results to guess at the indicated limit, if it exists, to three decimal places.     at the given values of x, accurate to five decimal places. Use the results to guess at the indicated limit, if it exists, to three decimal places. Complete the table by computing   at the given values of x, accurate to five decimal places. Use the results to guess at the indicated limit, if it exists, to three decimal places.     Complete the table by computing   at the given values of x, accurate to five decimal places. Use the results to guess at the indicated limit, if it exists, to three decimal places.

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If a rock is thrown upward on the planet Mars with a velocity of If a rock is thrown upward on the planet Mars with a velocity of   , its height in meters t seconds later is given by   . Find the average velocity over the time interval   . , its height in meters t seconds later is given by If a rock is thrown upward on the planet Mars with a velocity of   , its height in meters t seconds later is given by   . Find the average velocity over the time interval   . . Find the average velocity over the time interval If a rock is thrown upward on the planet Mars with a velocity of   , its height in meters t seconds later is given by   . Find the average velocity over the time interval   . .

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A machinist is required to manufacture a circular metal disk with area 1000 A machinist is required to manufacture a circular metal disk with area 1000   . If the machinist is allowed an error tolerance of   in the area of the disk, how close to the ideal radius must the machinist control the radius? Round your answer to the nearest hundred thousandth. . If the machinist is allowed an error tolerance of A machinist is required to manufacture a circular metal disk with area 1000   . If the machinist is allowed an error tolerance of   in the area of the disk, how close to the ideal radius must the machinist control the radius? Round your answer to the nearest hundred thousandth. in the area of the disk, how close to the ideal radius must the machinist control the radius? Round your answer to the nearest hundred thousandth.

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Graph the function by hand, not by plotting points, but by starting with the graph of one of the standard functions and then applying the appropriate transformations. Graph the function by hand, not by plotting points, but by starting with the graph of one of the standard functions and then applying the appropriate transformations.

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Use continuity to evaluate the limit. Use continuity to evaluate the limit.

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If f and g are continuous functions with If f and g are continuous functions with

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