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Question Number 34912 by abdo imad last updated on 12/May/18
letf(x,y,z)=(x2+y2+z2)αwithα∈R1)calculateΔf2)findαinordertohaveΔf=0
Answered by tanmay.chaudhury50@gmail.com last updated on 13/May/18
△f=df(x,y.z)=(∂∫∂x)y,zdx+(∂f∂y)x,zdy+(∂f∂z)x,ydz=α.(x2+y2+z2)α−1.2x.dx+α.(x2+y2+z2)α−1.2y+α.(x2+y2+z2)α−12z
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