Derivative of the step function: u(-t)

Thread starter JonForbes
Start date Mar 21, 2011
Tags

Derivative Function Step function

AI Thread Summary

The derivative of the step function u(-t) is indeed represented as -δ(t), where δ(t) is the impulse function. This aligns with the properties of the step function, confirming that the derivative results in an impulse at t=0. The discussion emphasizes the need for clarification on this mathematical concept. Overall, the derivative is accurately identified as the negative impulse function.

Mar 21, 2011

JonForbes

I need to know the derivative of the step function u(-t).

I believe it is: -&(-t)
where & represents the impulse function.

Is this correct?

Thanks.

Physics news on Phys.org

Mar 21, 2011

rock.freak667

Homework Helper

Yes that should be correct if I recall the properties of the step function correctly.

Mar 21, 2011

JonForbes

Thanks, just needed someone with more knowledge than me to confirm it.

Thread 'How Do I Draw This Shear and Moment Diagram?'

Hi everyone, Can anyone tell me how do I draw the shear and moment diagram of below pic using the method like below pic? This is my attempt/work of the reacting forces: Thank you very much for the help.

View full post »