2. Show that 1 1/2 (ɛ — eq)²4(r) = [p² — 2e(A · p) + e²A² + M²c²]y(r) · c²
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![The Klein-Gordon equation for a particle in external electromagnetic field is
2
ih d
Let
C at
e
—
C
p)
y = [(p - eA)² + M²c²]y
(r, t) = (r)e-iet/h](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3a11ce3d-21c0-472b-9212-b4fe5760ed67%2F272a4cf1-9dec-41fc-9e9f-3ee228cc8ff8%2F711jgry_processed.png&w=3840&q=75)
![2. Show that
1
(ɛ — eq)²4(r) = [p² – 2e(A · p) + e²A² + M²c²]y(r)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3a11ce3d-21c0-472b-9212-b4fe5760ed67%2F272a4cf1-9dec-41fc-9e9f-3ee228cc8ff8%2F6embvs9_processed.png&w=3840&q=75)
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