Question

order of integration

Answer 1

show that

\( \huge \int_{ 0}^{x} [ \int_{0}^{t} f(p) \ dp] \ dt =
\int_{0}^{x} (x − p) \ f(p) \ dp\)

by changing order of integration

have a real blind spot on this, simply cannot visualise or draw it.

Answer 2

Hmm so \(x\) is a constant here.

Answer 3

lets sketch the curves representing the bounds