Dotermine whether the given furction is a solition to the given daterentid equation. \ [ \theta=e^{3 t}-5 e^{4 t}, \frac{d^{2} \theta}{d t^{2}}-\theta^{d t}+20=-31 e^{4 t} \] d 0 dt the two sides of the diflerential equation equvalert on any ertevale of