find the local extrema and saddle point (if its exist) f (xiy)=4+x3+y?_ Ixy

In the given question we have to find the local extrema and saddle point of the function f(x,y) s.t…

Answered: f(xiy)=4+x+y? Ixy

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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Find the least squares regression line for the points. (0, 4), (3, 2), (8, −3) y(x) = Use the regression capabilities of a graphing utility to verify your results. Use the graphing utility to plot the points and graph the regression line. (Select Update Graph to see your response plotted on the screen. Select the Submit button to grade your response.) Update Graph Student Response Graph 10 у H 1 2 3 4 5 6 7 5 Student Response Graph Description -5 8 9 X
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A regression was done for 20 cities with the latitude (Latitude), a measurement of the distance of a location on the Earth from the equator in degrees and the average January temperatures (Temp) as the dependent variable measure in. The regression equation is a) The value of the slope is [Select ] [Select] TEMP=48.4 -0.31 x LATITUDE b) The predicted average January temperatures for the 20 cities for a latitude of 45 degrees is [Select] ✓. If in fact the [Select] average January temperature for a latitude of 45 degrees is 40° F , the residual is [Select] which is a(n) [Select] which means c) The coefficient of determination is R²: 66.2%. This value means [Select] The correlation r, is which means [Select] d) The y-intercept is [Select] the problem interprets to [Select] make sense in the context of the problem? [Select] Formulas: r = ±√R² Residual actual y - predicted y 0.7<|rl≤1 very strong 0.5

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