Recent content by MarkZone

Thank you very much!

I really don't know. It is a math problem without any further context.

Sorry for late response. The differential equation is the stress analysis of aerodynamics. I wonder if it is a partial or ordinary differential equation.

It is a AP calculus problem on the topic "Differential Equations & Slope fields." The original question asks me to solve this by the separation of variables method. That is all I know and my teacher does not know how to solve this either.

Oh It was jist from my math hw. There is no context for this.

Thanks everyone

I used to search physics and maths problems on the internet and found useful hints from this website. I want to be a member of the forum so that we can help each other.

Homework Statement dy/dx=2xcos(y)-xy^3[/B]Homework EquationsThe Attempt at a Solution dy/dx=2xcos(y)-xy^3=x(2cosy-y^3) dy/(2cosy-y^3)=xdx [/B] I can not integrate the left side of the equation. Can someone help me please?

Homework Statement x(d^2y/dx^2)+dx/dt+xy=0 Homework EquationsThe Attempt at a Solution At first I thought it was an ODE, but then I found out the derivative was respect to to variables x and t. I am not sure if it is an ODE or PDE. What are the dependent and independent variables in the...