9. [-/0.093 Points] DETAILS LARCALC11 13.1.026. Describe the domain and range of the function. 7= X - Domain: o ( x , v ): x = > O { (x, y): x is any real number, y is any real number o { (x , v): x = 0) Range: Oz>0 Oz21 Oz20 O all real numbers Need Help? Read It10. [-/0.093 Points] DETAILS LARCALC11 13.1.029. Describe the domain and range of the function. f(x, y) = arccos(x + y) Domain: o {(,v):-isx=1 Of (x, >):x+y=-1) O { (x, >):x+ > >1) O ( x ,y ): - isx+ y=1. Range: O - 2 OOSEST Oz O-121 O all real numbers Need Help? Read It Watch It11. [-/0.093 Points] DETAILS LARCALC11 13.1.032. Describe the domain and range of the function. f(x, y) = In(xy - 9) Domain: O (x, y ): x > 9, y = 9 O (x , y): xy = 9 o { (x, v): xy = 9) O { (x, >): x is any real number, y is any real number? of ( x , y): xy => 9) Range: O z#0 O z>0 Oz21 O all real numbers Oz20 Need Help? Read It Watch It12. [-/0.047 Points] DETAILS LARCALC11 13.1.047. Match the graph of the surface with one of the contour maps. A(x, y) = el - xz - y2 O O X O O Need Help? Read It13. [-/0.047 Points] DETAILS LARCALC11 13.1.048. Match the graph of the surface with one of the contour maps. A(x, y ) = el - x2 + 2 3 A - x > O O O Need Help? Read It14. [-/0.046 Points] DETAILS LARCALC11 13.1.049. Match the graph of the surface with one of the contour maps. f(x, y) = In(y - *=[) -21 O O Need Help? Read It15. [-/0.046 Points] DETAILS LARCALC11 13.1.050. Match the graph of the surface with one of the contour maps. Ax, y) = cos x" + 2yz 4 O O O Need Help? Read It Watch It16. [-/0.093 Points] DETAILS LARCALC11 13.1.051. Describe the level curves of the function. z=xty, C= -2, 2, 4, 5 O The level curves are non-circular ellipses. O The level curves are parabolas. O The level curves are hyperbolas. O The level curves are parallel lines. O The level curves are circles. Sketch a contour map of the surface using level curves for the given c-values. -3 3 5 O ar-2 3 -3 -2 O O17. [-/0.093 Points] DETAILS LARCALC11 13.1.053. Describe the level curves of the function. 2 = x- + 4y", c= 0, 1, 2, 3, 4 O The level curves are parabolas. O The level curves are hyperbolas. O The level curves are non-circular ellipses. O The level curves are circles. O The level curves are parallel lines. Sketch a contour map of the surface using level curves for the given c-values. c - 2 c-1 -2 O -6 -5 -3 -2 -1 2 3 4 5 6 -1 -2 -3 O O1. [-/0.5 Points] DETAILS LARCALC11 13.2.013. Find the limit. lim (x, y) - (2. 3) Discuss the continuity of the function. O continuous everywhere except where xy <: o continuous everywhere except where xy>> 0 O continuous everywhere O continuous everywhere except (0, 0) O continuous everywhere except where xy = 0 Need Help? Read It Watch It2. [-/0.5 Points] DETAILS LARCALC11 13.2.018. Find the limit. lim X (x, y) - (1, 43) vxty Discuss the continuity of the function. O continuous everywhere except (0, 0) O continuous for x + y = 0 O continuous for x + y > 0 O continuous for x + y 2 0 O continuous everywhere Need Help? Read It 3. [-/0.5 Points] DETAILS LARCALC11 13.2.021. Find the limit. lim arcsin xy (x, y) - (0. 8) 1 - xy Discuss the continuity of the function. O continuous for |xy| 0 O continuous everywhere except (0, 0) O continuous for 1 - xy = 0 O continuous everywhere Need Help? Read It Watch It4. [-/0.25 Points] DETAILS LARCALC11 13.2.025. Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim xy - 20 (x, y) - (5, 4) 20 + xy Need Help? Read It Watch It 5. [-/0.25 Points] DETAILS LARCALC11 13.2.028. Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim 1 (x, y) - (0, 0) x45 Need Help? Read It