To approximate:
2.032+0.82+2.12
Consider a function,
fx,y,z=x2+y2+z2
The linear approximation of a function f(x, y, z) at point (x0, y0, z0) is given by
Lx,y,z=fx0,y0,z0+fxx0,y0,z0x-x0+fyx0,y0,z0y-y0+fzx0,y0,z0z-z0
Formulas used:
ddxxn=nxn-1ddxconstant=0Chain rule of differentiation,ddxfgx=f'gx·g'x
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