Match the function with its graph (labeled I-VI). Givereasons a) f(x,y) = |x|+|y| b) f(x,y) = |xy| c) f(x,y) = 1\div1+x^{2}+y^{2} d) f(x,y) = (x^{2} -y^{2})^{2} e) f(x,y) = (x-y)^{2} f) f(x,y) = \sin(|x|+|y|)

sibuzwaW

sibuzwaW

Answered question

2020-11-06

Match the function with its graph (labeled I-VI). Givereasons
a) f(x,y)=|x|+|y|
b) f(x,y)=|xy|
c) f(x,y)=1÷1+x2+y2
d) f(x,y)=(x2y2)2
e) f(x,y)=(xy)2
f) f(x,y)=sin(|x|+|y|)

Answer & Explanation

i1ziZ

i1ziZ

Skilled2020-11-07Added 92 answers

Match the function with its graph (labeled I-VI). Givereasons
a) f(x,y)=|x|+|y|
Think of f(x,y) as Z: soyou have Z = |x| when y=0 and Z=|y| when x=0 so the only graph thisfits to is VI.
b) f(x,y)=|xy|
Here when x=0 then Z=0. andwhen y=0, z=0 so it must be graph V.
c) f(x,y)=1÷1+x2+y2Here when x=0 then Z=0. andwhen y=0, z=0 so it must be graph V.
11+x2+y2
goes to when x = 0
11+y2
and when y = 0
11+x2
This causes z to be close to zero when x and yare large which leads to graph I.
d) f(x,y)=(x2y2)2when x=0,z=y4
When y=0,z=x4
But when z=0,
y=±x
so that fits graph IV.e) f(x,y)=(xy)2
when x=0,z=y2
When y=0,z=x2
But when z=0, y=x so that fits graph II
f) f(x,y)=sin(|x|+|y|)
The oscillating nature ofthe trig should give this one away even if it wasn't the last oneon the list. So the answer is III, due to the fact when X=0 thenyou have z=sin(|y|) and when y=0 z=sin(|x|).Hope this helps.

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