Form the differential equation from the given relation :
`frac(x^2)(4+K)+frac(y^2)(9+K) = 1`

Form the differential equation from the given relation : y^2-2ay+x^2 = a^2

Form the differential equation from the given relation : (x - c)^2 + y^2 = 16

Form the differential equation from the given relation : xy = ae^x + be^-x + x^2

Form the differential equation from the given relation : y = A sin x + B cos x + x sin x

Solve: frac(x)(2) -frac(1-2x)(3) =2

Solve : frac(3x)(3x + 2) = frac(1)(2)

Find the relation s = ut + frac(1)(2)at^2

Solve : frac(3)(4x+3) = frac(1)(4x)

Solve the following equations. frac(z) (z + 15) = frac(4)(9)

Identify the terms, their coefficients for each of the following expressions. frac(x)(2) + frac(y)(2) - xy