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The wind-chill index W is the perceived temperature when the actual temperature is T and the wind speed is v, so we can write W = f(T, v). Wind speed (km/h) Actual temperature (°C) T -10 -15 -20 -25 V 20 30 40 50 60 70 -18 -20 -21 -22 -23 -23 -24 -26 -27 -29 -30 -30 -30 -33 -34 -35 -36 -37 -37 -39 -41 -42 -43 -44 (a) Estimate the values of f(-15, 40) and f(-15, 40). (Round your answers to two decimal places.) f(-15, 40) = -27 X f(-15, 40) What are the practical interpretations of these values? When the actual temperature is -15°C and the wind speed is 40 km/h, for every degree that the actual temperature rises the apparent temperatur rises ✔ by about -27 °C. x When the actual temperature is -15°C and the wind speed is 40 km/h, for every km/h that the wind speed increases the apparent temperature de by about -27 x °C.

The wind-chill index W is the perceived temperature when the actual temperature is T and the wind speed is v, so we can write W = f(T, v). Wind speed (km/h) Actual temperature (°C) T -10 -15 -20 -25 V 20 30 40 50 60 70 -18 -20 -21 -22 -23 -23 -24 -26 -27 -29 -30 -30 -30 -33 -34 -35 -36 -37 -37 -39 -41 -42 -43 -44 (a) Estimate the values of f(-15, 40) and f(-15, 40). (Round your answers to two decimal places.) f(-15, 40) = -27 X f(-15, 40) What are the practical interpretations of these values? When the actual temperature is -15°C and the wind speed is 40 km/h, for every degree that the actual temperature rises the apparent temperatur rises ✔ by about -27 °C. x When the actual temperature is -15°C and the wind speed is 40 km/h, for every km/h that the wind speed increases the apparent temperature de by about -27 x °C.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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9:00 PM Tue Mar 7 The wind-chill index W is the perceived temperature when the actual temperature is T and the wind speed is v, so we can write W = f(T, v). Wind speed (km/h) V 20 30 40 T -10 Actual temperature -15 (°C) -20 -25 40 50 -18 -20 -21 -22 webassign.net 60 70 -24 -26 -27 -29 -30 -23 -23 -30 -33 -34 -35 -36 -37 -39 -41 -42 -43 aw (b) In general, what can you say about the signs of and -? ƏT aw Əv (c) What appears to be the value of the following limit? aw -30 (a) Estimate the values of f(-15, 40) and f(-15, 40). (Round your answers to two decimal places.) f-15, 40) -27 X f(-15, 40) = -37 What are the practical interpretations of these values? When the actual temperature is -15°C and the wind speed is 40 km/h, for every degree that the actual temperature rises the apparent temperature rises ◊ ✔ by about by about -27 x °C. For a fixed wind speed v, the values of the wind-chill index W increase -44 When the actual temperature is -15°C and the wind speed is 40 km/h, for every km/h that the wind speed increases the apparent temperature decreases by about -27 xºc. ✓ aw as temperature T increases, so is positive ƏT For a fixed temperature T, the values of W decrease (or remain constant) as v increases ✔ , SO aw Əv is negative 28%
Transcribed Image Text:9:00 PM Tue Mar 7 The wind-chill index W is the perceived temperature when the actual temperature is T and the wind speed is v, so we can write W = f(T, v). Wind speed (km/h) V 20 30 40 T -10 Actual temperature -15 (°C) -20 -25 40 50 -18 -20 -21 -22 webassign.net 60 70 -24 -26 -27 -29 -30 -23 -23 -30 -33 -34 -35 -36 -37 -39 -41 -42 -43 aw (b) In general, what can you say about the signs of and -? ƏT aw Əv (c) What appears to be the value of the following limit? aw -30 (a) Estimate the values of f(-15, 40) and f(-15, 40). (Round your answers to two decimal places.) f-15, 40) -27 X f(-15, 40) = -37 What are the practical interpretations of these values? When the actual temperature is -15°C and the wind speed is 40 km/h, for every degree that the actual temperature rises the apparent temperature rises ◊ ✔ by about by about -27 x °C. For a fixed wind speed v, the values of the wind-chill index W increase -44 When the actual temperature is -15°C and the wind speed is 40 km/h, for every km/h that the wind speed increases the apparent temperature decreases by about -27 xºc. ✓ aw as temperature T increases, so is positive ƏT For a fixed temperature T, the values of W decrease (or remain constant) as v increases ✔ , SO aw Əv is negative 28%
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