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Please help me find the upper bound!!! Let

`f(x,y,z)=4x^(2)+xy+yz+5z^(2)`

. Find the linearization

`L(x,y,z)`

of

`f(x,y,z)`

at the point

`(3,-3,2)`

.

`L(x,y,z)=`

Find an upper bound for the magnitude

`|E|`

of the error in the approximation

`f(x,y,z)~~L(x,y,z)`

over the box

```
|x-3|<=0.04,|y+3|<=0.04,|z-2|<=0.04.
|E|<=
```