The differential equation for which y = ax2 + bx + c is the general solution is
1
\(\frac{{{d^4}y}}{{d{x^4}}} = 0\)
2
\(\frac{{{d^3}y}}{{d{x^3}}} = 0\)
3
\(\frac{{{d^5}y}}{{d{x^5}}} = 0\)
4
\(\frac{{{d^3}y}}{{d{x^3}}}+\frac{{{d^4}y}}{{d{x^4}}} = 0\)
5
Not Attempted