Exam 4: The Derivative in Graphing and Applications

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A rectangular sheet of cardboard 64 cm by 69 cm is used to make an open box by cutting squares of equal size from the four corners and folding up the sides. What size squares should be cut to obtain the largest possible volume?

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f(x) = x4 - 4x2 - 3 is concave down on the interval I = (Approximate your answer to 3 decimal places.)

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s(t) = 5t4 - 4. Find t when a = 0.

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The position function of a particle is given by s(t) = 4t9 -5t + 9. Find the velocity function.

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f(x) = 4x5 + 3. Find the points of inflection

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Answer true or false. Answer true or false.   . .

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A lighthouse is 8 miles off a straight coast and a town is located 18 miles down the seacoast. Supplies are to be moved from the town to the lighthouse on a regular basis and at a minimum time. If the supplies can be moved at the rate of 7 miles/hour on water and 25 miles/hour over land, how far from the town should a dock be constructed for shipment of supplies? A lighthouse is 8 miles off a straight coast and a town is located 18 miles down the seacoast. Supplies are to be moved from the town to the lighthouse on a regular basis and at a minimum time. If the supplies can be moved at the rate of 7 miles/hour on water and 25 miles/hour over land, how far from the town should a dock be constructed for shipment of supplies?

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f(x) = 2x2 - 6x + 10 on (- ∞\infty , ∞\infty ) has

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The position function of a particle is given by s(t) = 6t2 - 3t + 8. Find the acceleration function.

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Determine the x-coordinate of each critical point of Determine the x-coordinate of each critical point of   . .

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The largest interval over which f is increasing for f(x) = x3 - 6 is

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The stiffness of a beam of rectangular cross section is proportional to the product xy3. Find the stiffest beam which can be cut from a log with diameter d = 28 inches. See figure on right. The stiffness of a beam of rectangular cross section is proportional to the product xy<sup>3</sup>. Find the stiffest beam which can be cut from a log with diameter d = 28 inches. See figure on right.

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Find the relative extrema for f(x) = (x + 4)-1/5.

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Find s when a = 0.

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Verify that f(x) = x2 + 7x - 3 satisfies the hypothesis of the Mean-Value Theorem over the interval [0, 1] and find all values of C that satisfy the conclusion of the theorem.

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Find the extreme values for  Find the extreme values for   on the interval (0, + \iff ) and determine where those values occur. on the interval (0, +   ⟺  \iff ) and determine where those values occur.

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The position function of a particle is given by s(t) = t5. Find the acceleration function.

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Approximate Approximate   by applying Newton's Method to the equation x<sup>3</sup> + 47 = 0. by applying Newton's Method to the equation x3 + 47 = 0.

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f(x) = cos 4x. Find the points of inflection on [0, π\pi /2].

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Use Newton's Method to find the largest positive solution of x4 + 2x3 -2x2 - 8x -10 = 0.

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