EULERS TEOREM ON HOMOGENOUS FUNCTION PRACTICE PROBLEMS

In each of the following cases, determine whether the following function is homogeneous or not. If it is so, find the degree.

Problem 1 :

(i) f (x, y) = x2 y + 6x3+7                 Solution

(ii) (iii) (iv) Solution

Problem 2 :

Prove that

f (x, y) = x3 − 2x2y +3xy2 + y3

is homogeneous; what is the degree? Verify Euler’s Theorem for f.                Solution

Problem 3 :

Prove that

g(x, y) = x log (y/x)

is homogenous, what is the degree ? Verify Euler's  theorem for g.

Solution

Problem 4 :

Prove that

g(x, y) = x log (y/x)

is homogenous, what is the degree ? Verify Euler's  theorem for g.

Solution

Problem 5 :

If

v(x, y) = log [(x2+y2)/(x+y)]

prove that x(∂v/∂x) + y(∂v/∂y) =  1

Solution

Problem 6 :

If

w(x, y, z) = log[(5x3y4+7y2xz4-75y3z4)/(x2+y2)]

find x(∂w/∂x) + y(∂w/∂y) + z(∂w/∂z).

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