First verify by substitution that y1.x/ D x1=2 cos x is
Chapter , Problem 44(choose chapter or problem)
First verify by substitution that y1.x/ D x1=2 cos x is one solution (for x>0) of Bessels equation of order 1 2 , x2y00 C xy0 C .x2 1 4 /y D 0:
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