1/([x-0.75+n]^2+[y-5.25]^2+[z-1]^2)+1/([x+0.75+n]^2+[y-5.25]^2+[z-1]^2)+1/([x+n]^2+[y-4.6]^2+[z-1.4]^2)=7

eyes and nose

[x+n]^2+[y-4.5]^2+z^2=3

head

[x+n]^2+[y-3.9]^2+[z-0.8]^2=0.75

mouth

[x+n]^4+[y-1]^2+2*z^4=5

body

[x-0.7+n]^4+0.1*[y+2.25]^2+z^4=0.25

right leg

[x+0.7+n]^4+0.1*[y+2.25]^2+z^4=0.25

left leg

1/([x+1.4+n]^4+0.1*[y-1.6]^2+z^4)+1/([x-1.4+n]^4+0.1*[y-1.6]^2+z^4)=5

arms

1/([x+1.5+n]^2+y^2+z^2)+1/([x-1.5+n]^2+y^2+z^2)=3

hands

[x+0.8+n]^4+[y+4]^4+0.25*[z-0.3]^2=0.25

left foot

[x-0.8+n]^4+[y+4]^4+0.25*[z-0.3]^2=0.25

right foot

0.0001*[x+n]^4+[y+4.9]^4+0.008*[z-0.3]^4=0.01

skateboard

1/([x-2+n]^2+[y+5.5]^2+[z-0.9]^2)+1/([x-2+n]^2+[y+5.5]^2+[z+0.25]^2)+1/([x+2+n]^2+[y+5.5]^2+[z-0.9]^2)+1/([x+2+n]^2+[y+5.5]^2+[z+0.25]^2)=5

wheels

y=-7

street

0.00075*x^4+5*[y+6.5]^4+0.005*[z+2]^4=2

sidewalk

z=-4.5

wall

0.075*[x+3]^4+0.001*y^4+7*[z+5]^4=5

door

0.1*[x-3.5]^4+0.1*[y-3]^4+7*[z+5]^4=5

window

[x+4.5]^2+y^2+[z+3.8]^2=0.3

knob

Graph of the formula

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