Suppose you're faced with a Schrodinger equation that you can't solve, but you have a pretty...

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Suppose you're faced with a Schrodinger equation that you can't solve, but you have a pretty good guess at what the ground state wave function should be. Call your guess "f". Write an expression for the expectation value of the energy in state f, and compare it to the true ground state energy of the system. Suppose you're faced with a Schrodinger equation that you can't solve, but you have a pretty good guess at what the ground state wave function should be. Call your guess "f". Write an expression for the expectation value of the energy in state f, and compare it to the true ground state energy of the system.