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maybaby9625
25.09.2019 •
Mathematics
4roommates share the cost of $108 of the electric bill evenly. what is the fraction to represent the division and classify each result by indicating the set or sets to which it belongs.
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Ответ:
Ответ:
The answer to this question can be given as:
Tangent line at r(0)[more generally r(to)] is on tangent plane of S at that point.
Step-by-step explanation:
In option (A):
put x=2 ,y=-2 in Z=x sin(x+y).
Z=2 sin(2+(-2))
Z=2 sin(2-2)
Z=2 sin(0)
we know that sin o= 0;
so (2,-2,0) ∈ s
dz/dx=sin(x+y)+xcos(x+y)
dz/dx=x cos(x+y)
tangent plane T at (a,-2,0) is:
z-0= dz/dx(2,-2)(x-2)+dz/dy(2,-2)(y+2)
z=(0+2)(x-2)+(2)(y+2)
z=2(x-2)+2(y+2)
z=2x-4+2y+4
z=2x+2y is the plane at(2,-2,0)
In option (B):
r(t) is on s
r'(t) =(a'(t),b'(t),c'(t))
this is tangent rector on S for Vt
so r'(0) is tangent to 5
r'(0) is parallel to T[tangent plane or 5]
In option (C):
yes.
fact , for any surface S. Choose any curve acts in S
if r'(0)!= 0 or[more generally r'(b)!=0]
=Tangent line at r(0)[more generally r(to)]
is on tangent plane of S at that point.