Euler's theorem is applicable to which type of function?
A
Linear function
B
Homogeneous function
C
Exponential function
D
Logarithmic function
Analysis & Theory
Euler's theorem applies only to homogeneous functions of degree n.
If f(x, y) is homogeneous of degree n, then Euler's theorem states?
A
x∂f/∂x + y∂f/∂y = f(x,y)
B
x∂f/∂x + y∂f/∂y = 0
C
x∂f/∂x + y∂f/∂y = n f(x,y)
D
∂f/∂x + ∂f/∂y = n
Analysis & Theory
For a homogeneous function of degree n: x∂f/∂x + y∂f/∂y = n f(x, y).
If f(x, y) = x² + y², then degree of homogeneity n is?
A
1
B
2
C
0
D
None
Analysis & Theory
f(tx, ty) = t²(x² + y²) ⇒ degree n = 2.
If f(x, y) = x³y², then degree of homogeneity n is?
A
5
B
6
C
1
D
None
Analysis & Theory
f(tx, ty) = t³x³ · t²y² = t⁵ x³y² ⇒ degree n = 5.
For a homogeneous function f(x, y) of degree n, what is ∂f/∂x at (kx, ky)?
A
k ∂f/∂x
B
k^n ∂f/∂x
C
k^(n-1) ∂f/∂x
D
∂f/∂x remains same
Analysis & Theory
Partial derivatives scale as k^(n-1) for a homogeneous function of degree n.
Euler's theorem can be extended to how many variables?
A
2 variables only
B
3 variables only
C
Any number of variables
D
1 variable only
Analysis & Theory
Euler's theorem holds for homogeneous functions of any number of variables.
If f(x, y, z) is homogeneous of degree 4, then Euler's theorem states?
A
x∂f/∂x + y∂f/∂y + z∂f/∂z = f
B
x∂f/∂x + y∂f/∂y + z∂f/∂z = 4f
C
x∂f/∂x + y∂f/∂y + z∂f/∂z = 0
D
None
Analysis & Theory
For n = 4: x∂f/∂x + y∂f/∂y + z∂f/∂z = 4f.
If f(x, y) = x²y + xy², degree of homogeneity is?
A
2
B
3
C
1
D
4
Analysis & Theory
Each term: x²y and xy² is of degree 3 ⇒ n = 3.
If f(x, y) is homogeneous of degree n, then ∂²f/∂x² is homogeneous of degree?
A
n
B
n-1
C
n-2
D
n+1
Analysis & Theory
Second-order partial derivatives reduce degree by 2 ⇒ degree = n-2.
Euler's theorem helps in simplifying which of the following?
A
Integration of functions
B
Finding maxima and minima
C
Checking homogeneity
D
Solving differential equations
Analysis & Theory
Euler's theorem is useful to check homogeneity of functions and simplifying related calculations.