- #1
Outrageous
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For a function z=f(x,y),
Keeping y constant, using Taylor's
f(x+Δx,y)-f(x,y)=...-equation 1
f(x,y+Δy)-f(x,y)=...-equation 2
Then total change of z =equation 1 + equation 2
Is this correct?
but in the picture uploaded http://www.math.auckland.ac.nz/mathwiki/images/d/dc/MATHS_362_Semester_2_2007_Lecture_1.pdf
How to get that 2fxy(x-a)(y-b)?
Please guide.
Thank you
Keeping y constant, using Taylor's
f(x+Δx,y)-f(x,y)=...-equation 1
f(x,y+Δy)-f(x,y)=...-equation 2
Then total change of z =equation 1 + equation 2
Is this correct?
but in the picture uploaded http://www.math.auckland.ac.nz/mathwiki/images/d/dc/MATHS_362_Semester_2_2007_Lecture_1.pdf
How to get that 2fxy(x-a)(y-b)?
Please guide.
Thank you