+ The direction = (-) that T is going up and V is going down. Use this chart to give an estimate for D„W(-20,30) in the direction u = means Make sure you explain your steps with English words. + HINT:...

Extracted text: + The direction = (-) that T is going up and V is going down. Use this chart to give an estimate for D„W(-20,30) in the direction u = means Make sure you explain your steps with English words. + HINT: Estimate the partial derivatives W aw and W then use the aT av directional derivative formula.


Extracted text: THE NORA Wind Chill Chart Temperature (°F) Calm 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30-35 -40 -45 5 36 31 25 19 13 7 1 -5 -11 -16. -22 -28 -34 -40 -46 -52 -57 -63 10 34 27 21 15 9. -4 -10 -16 -22 -28 -35 -41 -47 -53 -59 -66 -72 15 32 25 19 13 6. -7 -13 19 -26 -32 -39 -45 -51 -58 -64 -71 -77 20 30 24 17 11 4 -2 -9 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81 E 25 29 23 16 6. 3 -4 -11 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -84 30 28 22 15 8 1 -5 -12 19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87 0 35 28 21 14 7 -7 -14 -21 -27 -34 -41 -48 -55 -62 -69 -76 -82 -89 40 27 20 13 6. -1 -8 -15 -22 -29 -36 -43 -50 -57 -64 -71 -78 -84 -91 45 26 19 12 -2 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -86 -93 50 26 19 12 4 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 -88 -95 55 25 18 11 4 -3 -11 18 -25 -32 -39 -46 -54 -61 -68 -75 -82 -89 -97 60 25 17 10 3 -4 -11 -19 -26 -33 -40 -48 -55 -62 -69 -76 -84 -91 -98 Frostbite Times 30 minutes 10 minutes 5 minutes Wind Chill (°F) = 35.74 + 0.6215T - 35.75(V0.16) + 0.4275T(V0.16) Where, T= Air Temperature (°F) V=Wind Speed (mph) %3D Effective 11/01/01 Wind (mph) SERVICE