help me in homogeneous equation
determine in each exercise whether or not the equation/function is homogeneous. if it is homogeneous, state the degree of teh function
\[1. y` = \frac{ 2y^4+x^4 }{ xy^3}\]
\[2. y` = \frac{ (x^2+y) }{ x^3 }\]
\[3. y` = \frac{ x^2+y }{ xy }\]
4. \[y`= \frac{ x^2 }{ y }\]
\[5. y` = \frac{ y }{ x + \sqrt{xy} }\]
@kittiwitti1
Hi
Look at the right side of the given equation. ``` Replace x by kx Replace y by ky ``` what do you get ?
\[= \frac{ ky^4 +kx^4 }{ kxky^3}\]
@ganeshie8 hey
simplify the fraction a bit by factoring out k's
also you have it wrong
\[k(y^4+x^4)/k(xy^3)\]
x^4 replacing x by kx gives you (kx)^4 not just kx^4
\(\large y' = \frac{ 2y^4+x^4 }{ xy^3} \) replace y by ky and x by kx \(\large y` = \frac{ 2(ky)^4+(kx)^4 }{ kx(ky)^3} \)
use the property \[(ab)^n=a^nb^n\]
\[y`` = \frac{ 2(ky)^5+(kx)^5 }{ kx(ky)^4}\]
??
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