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Quantum Mechanics}Orthogonality

States or orthogonal when their dot-product (bra-ket) is 0. Since the eigenvectors |i\rangle are given as orthonormal, \langle i | i \rangle=1.

\langle \psi_i | \psi_2 \rangle =5-15+2x=0 Solve the equation to find that x=-10, as in choice (E).
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Comments
kristen
2013-09-23 15:37:00		it should be 5+15+2x=0 (instead of 5-15+2x=0)NEC
walczyk
2011-04-07 00:14:00		this site has got some disrepair and neglect, but i still think its fantastic.NEC
Phobos
2010-09-13 11:37:44		As wrote jax: "You mean 5 + 15 + 2x = 0..."

Maybe if I post it as a "typo" someone will notice.
Typo Alert!
Phobos
2010-09-13 11:36:55		As wrote jax: "You mean 5 + 15 + 2x = 0..."

Maybe if I post it as a "typo" someone will notice.		NEC
Jefe
2006-10-29 20:11:11		jax is correctNEC
jax
2005-12-07 19:19:52		You mean 5 + 15 + 2x = 0...NEC

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it should be 5+15+2x=0 (instead of 5-15+2x=0)

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