Find the differential of the function f(x,y)=−5x√y at the point (8,2)(8,2) using Δx=0.25Δx=0.25 and Δy=−0.15Δy=-0.15   . dz=dz=    Now find ΔzΔz and compare it to your answer above Δz=Δz=

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Find the differential of the function f(x,y)=−5x√y at the point (8,2)(8,2) using Δx=0.25Δx=0.25 and Δy=−0.15Δy=-0.15   .

dz=dz=   

Now find ΔzΔz and compare it to your answer above

Δz=Δz=   

Hint: If entering a decimal, round to at least 5 places

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