DISCUSS: Phases of the Moon During the course of a lunar cycle (about 1 month) the moon undergoes the familiar lunar phases. The phases of the moon are completely analogous to the phases of the sine function described in Exercise 63. The figure below shows some phases of the lunar cycle starting with a “new moon ” “waxing crescent moon ” “first quarter moon” and so on. The next to last phase shown is a “waning crescent moon.” Give similar descriptions for the other phases of the moon shown in the figure. What are some events on the earth that follow a monthly cycle and are in phase with the lunar cycle? What are some events that are out of phase with the lunar cycle?
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Chapter 5 Solutions
Precalculus: Mathematics for Calculus (Standalone Book)
- ansewer both questions in a very detailed manner . thanks!arrow_forwardQuestion Considering the definition of f(x) below, find lim f(x). Select the correct answer below: -56 -44 ○ -35 ○ The limit does not exist. x+6 -2x² + 3x 2 if x-4 f(x) = -x2 -x-2 if -4x6 -x²+1 if x > 6arrow_forwardLet g(x) = f(t) dt, where f is the function whose graph is shown. y 5 f 20 30 t (a) Evaluate g(x) for x = 0, 5, 10, 15, 20, 25, and 30. g(0) = g(5) = g(10) = g(15) =| g(20) = g(25) = g(30) = (b) Estimate g(35). (Use the midpoint to get the most precise estimate.) g(35) = (c) Where does g have a maximum and a minimum value? minimum x= maximum x=arrow_forward
- Question Determine lim f(x) given the definition of f(x) below. (If the limit does not exist, enter DNE.) x+6+ -2x²+3x-2 f(x) -2x-1 if x-5 if -−5≤ x ≤ 6 3 if x 6arrow_forwardQuestion Given the following piecewise function, evaluate lim f(x). (If the limit does not exist, enter DNE.) x-3 Provide your answer below: x² + 3x 3 if x-3 f(x) -3 if -3x -2x²+2x-1 6 if x 6arrow_forwardQuestion Given the following piecewise function, evaluate lim f(x). x→2 Select the correct answer below: -73 -24 -9 -12 The limit does not exist. 2x f(x) = -2x²-1 if -2x2 3x+2 if x 2arrow_forward
- Question Given the following piecewise function, evaluate lim f(x). f(x) = x+1- -2x² - 2x 3x-2 2 x² +3 if x-2 if -2< x <1 if x 1 Select the correct answer below: ○ -4 ○ 1 ○ 4 The limit does not exist.arrow_forwardQuestion Given the following piecewise function, evaluate lim →1− f(x). Select the correct answer below: ○ 1 ○ 4 -4 The limit does not exist. -2x² - 2x x 1arrow_forward(4) (8 points) (a) (2 points) Write down a normal vector n for the plane P given by the equation x+2y+z+4=0. (b) (4 points) Find two vectors v, w in the plane P that are not parallel. (c) (2 points) Using your answers to part (b), write down a parametrization r: R² — R3 of the plane P.arrow_forward
- (2) (8 points) Determine normal vectors for the planes given by the equations x-y+2z = 3 and 2x + z = 3. Then determine a parametrization of the intersection line of the two planes.arrow_forward(3) (6 points) (a) (4 points) Find all vectors u in the yz-plane that have magnitude [u also are at a 45° angle with the vector j = (0, 1,0). = 1 and (b) (2 points) Using the vector u from part (a) that is counterclockwise to j, find an equation of the plane through (0,0,0) that has u as its normal.arrow_forward(1) (4 points) Give a parametrization c: R R³ of the line through the points P = (1,0,-1) and Q = (-2, 0, 1).arrow_forward
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