
Concept explainers
Make Sense? During the winter, you program your home thermostat so that at midnight, the temperature is 55°. This temperature is maintained until 6 A.M. Then the house begins to warm up so that by 9 A.M. the temperature is 65°. At 6 P.M. the house begins to cool. By 9 P.M., the temperature is again 55°.
In Exercises 137–140, determine whether each statement makes sense or does not make sense, and explain your reasoning. If the statement makes sense, graph the new function on the domain [0, 24]. If the statement does not make sense, correct the function in the statement and graph the corrected function on the domain [0, 24].
I decided to change the heating schedule to start one hour earlier than before, so I reprogrammed the thermostat to y = f(t – 1).

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Chapter 2 Solutions
EBK COLLEGE ALGEBRA
- Let S = be a set of k vectors in R^, with karrow_forwarda) [1√2-31x+1√3-11y = x (1 - √2) + √34 LI√2-21x-1√3-3/4= √34 - √2x-4arrow_forwardPlease Help me answer this linear algebra question. This is a practice textbook question.arrow_forward1. a scientist observed a bacterium in a microscope. it measured about .0000029 meter in diameter which of the following is closest to it? A- 2 x 10^-6, B- 2 x 10^-5, C- 3 x 10^-5, or D- 3 x 10^-6 2.express the product of 500 and 400 in scientific notation. is it 2 x 10^5 or 2 x 10^4 or 2 x 10^3 or 20 x 10^4arrow_forwardPlease Help me answer this linear algebra question. This is a practice textbook question.arrow_forwardPlease Help me answer this linear algebra question. This is a practice textbook question.arrow_forwardTY D om E h om ng 00 C B A G F Q ו 3 13 Details Find an Euler path for the graph. Enter your response as a sequence of vertices in the order they are visited, for example, ABCDEA. fic ► Question Help: Video Message instructor Submit Question tor arch 園 A Wind advisoryarrow_forwardYou are provided with three 2D data points, p1, p2 and p3. Solving A C = B for C provides youwith the coefficients of a natural cubic spline curve that interpolates these points.Additionally, you have been given A and B, but some elements are missing. Moreover, the last two rowsof A are entirely absent. Your task is to determine and fill in the missing elements. For the last two rows,enforce a zero tangent at the beginning (in p1) and a not-a-knot boundary condition in p2. The matricesA and B are given as follows:Explain how to find the entries of A and B . How would you adapt these matrices if the data pointswere 3D? What if your spline should go through five data points? How many “extra rows” would there thenbe (with “extra” meaning “in addition to securing C2-continuity”)?arrow_forwardWhich graph represents f(x) = √x-2+3?arrow_forwardPractice Assignment 5.6 Rational Functions M Practice Assig Practice Assignment 5.6 Rational Functions Score: 120/150 Answered: 12/15 Question 10 A Write an equation for the function graphed below 5 + 4 1 2 H + + -7 -6 -5 -4 -3 -2 -1 2 34567 | -2 ర y = Question Help: Video Message instructor Post to forum Submit Questionarrow_forwardit's not algebra 4th gradearrow_forwardCan you tell me if I answered and showed my work correctlyarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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