Show that the function y axm bxm is the solution of the di

Show that the function y = ax^m + bx^-m is the solution of the differential equation x^2y\"+xy\'-m^2y = 0

Solution

y\'\' = (y\')\'

y\' = amxm-1-mbx-m-1

y\'\' = am(m-1)xm-2+m(m+1)bx-m-2

x2y\'\' = x2* am(m-1)xm-2+m(m+1)bx-m-2

xy\' = x(amxm-1-mbx-m-1)

-m2*y =-axmm2 - m2bx-m

Adding all these we get: 0.

So, The equation y=axm+bx-m satisfies the differential equation.

 Show that the function y = ax^m + bx^-m is the solution of the differential equation x^2y\

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