Question

integration from 0 to 5 cos delta(x-π) dx​

Answer 1

Answer:

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I have a pboblem as: ∫2π0δ(cosx)dx∫02πδ(cosx)dx.

I have done this:

g(x)=cosx=0⇒[x=π2x=−π2⇒[g′(π2)=−sin(π2)=−1g′(−π2)=−sin(−π2)=1⇒∫2π0δ(cosx)dx=∫2π<

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