`(d^(2)y)/(dx^(2)) +y=0`

show that if. y = sin 3x : then(d^(2)y)/(dx^(2)) + 9y = 0

Determine the order and degree of the differential equation : ((dy)/(dx))^(3)-2y(d^(2)y)/(dx^(2))=0 .

The curve satisfying (d^(2)y)/(dx^(2))-4y'=0 and passing through (1,0) is

The curve satisfying (d^(2)y)/(dx^(2))-4y'=0 and passing through (1,0) is

What is the degree of the differential equation (d^(2) y)/(dx^(2)) + 2 ((d^(2) y)/(dx^(2)))^(2) - (dy)/(dx) + y = 0

If y = 3 sin x + 2 cos x then prove that (d^2y)/(dx^2) + y = 0

If y=2sinx+3cosx , show that (d^2y)/(dx^2)+y=0 .

If y=5cosx-3sinx , prove that (d^2y)/(dx^2)+y=0 .

If y=5 cos x-3 sin x , Prove that (d^2y)/(dx^2)+y=0 .