Problem 1. Consider the function of several variables f (x, y)= 4 +x² +y° a. Describe verbally what the expected form of a graph for a function of these number of variables is. How does this differ from a graph a function of one variable and why? b. Provide valid arguments to support the claim that R?, i.e., the xy plane is in fact the domain of this function. c. Find the first partial derivatives of the function and briefly describe their meaning.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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answer just a,b and c 

Problem 1. Consider the function of several variables f (x, y) = 4+x² + y°
a. Describe verbally what the expected form of a graph for a function of these number of variables is.
How does this differ from a graph a function of one variable and why?
b. Provide valid arguments to support the claim that R?, i.e., the xy plane is in fact the domain of this function.
c. Find the first partial derivatives of the function and briefly describe their meaning.
d. Obtain a linear approximation of the function around (2,1)
e. Employ the equation just obtained to approximate the value f(2.1, 0.9). How good is this approximation?
Transcribed Image Text:Problem 1. Consider the function of several variables f (x, y) = 4+x² + y° a. Describe verbally what the expected form of a graph for a function of these number of variables is. How does this differ from a graph a function of one variable and why? b. Provide valid arguments to support the claim that R?, i.e., the xy plane is in fact the domain of this function. c. Find the first partial derivatives of the function and briefly describe their meaning. d. Obtain a linear approximation of the function around (2,1) e. Employ the equation just obtained to approximate the value f(2.1, 0.9). How good is this approximation?
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