Question

Question about linear ODEs:
Give a reason why in (4) you may
choose the constant of integration in ∫p dx to be zero.

Equation (4) from the book is in the comment below

Answer 1

\[y(x)=e^{−h}(∫e^{h}r\;dx+c),\;\;h=∫p(x)dx\]

Answer 2

a first order equation only needs one constant