Basic purpose of this article is to Discuss on Constant Coefficients. Here explain Constant Coefficients in mathematical terms. The general second‐order homogeneous linear differential equation has got the form: a(x)y” + b(x)y’ + c(x)y = 0, In case a( x), b( x), and c( x) are constants, a( x) ≡ a is not equal to 0, b( x) ≡ t, c( x) ≡ c, then the equation gets simply. ay” + by’ + cy = 0. This is the general second‐order homogeneous linear situation with constant coefficients. Theorem A above says which the general solution of this equation could be the general linear combination regarding any two linearly independent solutions.