# Finite Difference for Fourth-Order PDE

How to discretize the following 4th order PDE using finite difference method?

$$\frac{\partial^{2} y}{\partial t^{2}}+\frac{\partial^{4} y}{\partial x^{4}}=0$$

thanks

• Welcome to SciComp.SE! Your question is a bit superficial and in current form, perfectly answered by putting the first sentence into Google. (If not, you should explain that!) What is the background, what about boundary conditions etc.? – Christian Clason May 31 '15 at 6:51
• Also, cross-posting is discouraged on the StackExchange network, so people don't waste their time with an answer you already received on the other site. The usual procedure is to wait a few days, and then either raise a flag and ask the moderators for migration (if there are some answers already) or delete the old and ask a new question. – Christian Clason May 31 '15 at 6:51
• – Christian Clason May 31 '15 at 6:52
• this is noted.... im new to this... – mich May 31 '15 at 7:03