Functions of Several Variables
Functions of Several Variables
Algebraic
A real-value function of f of x, y, z, … is a rule for manufacturing a new
number, written f(x, y, z …), from the values of a sequence of independent
variables (x, y, z, …) .
f ( x, y ) x 2 y 2 4 x 1
Example: Function of 2 variables
For the function f, evaluate.
f (2,1) 22 12 4 2 1 2
Substitute 2 for x and 1 for y.
2
2
f (a, 5) a 5 4 a 1 a 2 4a 26
f ( x …

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