Find the linear approximation of the function f(x, y, z) = x2 + y2 + z2 at (4, 4, 7) and use it to approximate the number 4.022 + 3.992 + 6.972 . (Round your answer to five decimal places.) f(4.02, 3.99, 6.97) ≈

80.66

Step-by-step explanation:

Since we have three variables,

Therefore:

Using the above:

f(4.02, 3.99, 6.97) =81+ 8(4.02 - 4) + 8 (3.99 - 4) +14(6.97-7)=80.66.

The approximation of   is 80.66000.

for the first question it would be the second answer for the second question it would be the third answer and for the third question it would be the first answer

step-by-step explanation:

77

step-by-step explanation: