Find the linear approximation of the function
f(x,y,z)=\sqrt(x^(2)+y^(2)+z^(2))at
(4,7,4)and use it to approximate the number
\sqrt(4.02^(2)+6.97^(2)+3.99^(2)). (Round your answer to four decimal places.)
f(4.02,6.97,3.99)=
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◻9. [-/5 Points] SCALCET9 14.4.027.EP.